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13399706880 = 28345737499
BaseRepresentation
bin11000111101010111…
…10100110100000000
31021120211220122020000
430132223310310000
5204420311110010
610053350120000
7653025425550
oct143653646400
937524818200
1013399706880
11575687011a
12271b650000
13135713ca51
14911895160
155365a87c0
hex31eaf4d00

13399706880 has 720 divisors, whose sum is σ = 56389872000. Its totient is φ = 2974040064.

The previous prime is 13399706857. The next prime is 13399706963. The reversal of 13399706880 is 8860799331.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 26852871 + ... + 26853369.

Almost surely, 213399706880 is an apocalyptic number.

13399706880 is a gapful number since it is divisible by the number (10) 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 13399706880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28194936000).

13399706880 is an abundant number, since it is smaller than the sum of its proper divisors (42990165120).

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

13399706880 is an equidigital number, since it uses as much as digits as its factorization.

13399706880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 13399706880 in words is "thirteen billion, three hundred ninety-nine million, seven hundred six thousand, eight hundred eighty".