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15106506156144 = 24321319617439371
BaseRepresentation
bin1101101111010100000111…
…1011101110100001110000
31222111011112101110200212100
43123311001323232201300
53440001111033444034
652043455542100400
73116260206450264
oct333650173564160
958434471420770
1015106506156144
1148a46a6999027
12183b8aa41a700
138576ca927150
143a3231a600a4
151b2e4cb69099
hexdbd41eee870

15106506156144 has 480 divisors, whose sum is σ = 48782042749440. Its totient is φ = 4325036083200.

The previous prime is 15106506156113. The next prime is 15106506156191. The reversal of 15106506156144 is 44165160560151.

It is a happy number.

15106506156144 is a `hidden beast` number, since 1 + 5 + 10 + 6 + 5 + 0 + 6 + 15 + 614 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 15106506156144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1612043779 + ... + 1612053149.

It is an arithmetic number, because the mean of its divisors is an integer number (101629255728).

Almost surely, 215106506156144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15106506156144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24391021374720).

15106506156144 is an abundant number, since it is smaller than the sum of its proper divisors (33675536593296).

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

15106506156144 is a wasteful number, since it uses less digits than its factorization.

15106506156144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10221 (or 10212 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 15106506156144 in words is "fifteen trillion, one hundred six billion, five hundred six million, one hundred fifty-six thousand, one hundred forty-four".