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15239493943296 = 2153731799043
BaseRepresentation
bin1101110111000011100010…
…0111111000000000000000
31222221212210112110020221120
43131300320213320000000
53444140440422141141
652224532111552240
73132005603133330
oct335607047700000
958855715406846
1015239493943296
114946040046937
12186162382b680
138671027c836c
143a9849c730c0
151b6632e5cc66
hexddc389f8000

15239493943296 has 512 divisors, whose sum is σ = 48553864396800. Its totient is φ = 4159887114240.

The previous prime is 15239493943291. The next prime is 15239493943337. The reversal of 15239493943296 is 69234939493251.

It is a tau number, because it is divible by the number of its divisors (512).

It is a self number, because there is not a number n which added to its sum of digits gives 15239493943296.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15239493943291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1685220951 + ... + 1685229993.

It is an arithmetic number, because the mean of its divisors is an integer number (94831766400).

Almost surely, 215239493943296 is an apocalyptic number.

15239493943296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15239493943296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24276932198400).

15239493943296 is an abundant number, since it is smaller than the sum of its proper divisors (33314370453504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15239493943296 is an frugal number, since it uses more digits than its factorization.

15239493943296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9193 (or 9165 counting only the distinct ones).

The product of its digits is 340122240, while the sum is 69.

The spelling of 15239493943296 in words is "fifteen trillion, two hundred thirty-nine billion, four hundred ninety-three million, nine hundred forty-three thousand, two hundred ninety-six".