12616369920 has 864 divisors, whose sum is σ = 56371230720. Its totient is φ = 2615500800.

The previous prime is 12616369907. The next prime is 12616369973. The reversal of 12616369920 is 2996361621.

12616369920 is a `hidden beast` number, since 1 + 2 + 6 + 1 + 636 + 9 + 9 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 29272105 + ... + 29272535.

It is an arithmetic number, because the mean of its divisors is an integer number (65244480).

Almost surely, 2^12616369920 is an apocalyptic number.

12616369920 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 12616369920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28185615360).

12616369920 is an abundant number, since it is smaller than the sum of its proper divisors (43754860800).

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

12616369920 is a wasteful number, since it uses less digits than its factorization.

12616369920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 12616369920 in words is "twelve billion, six hundred sixteen million, three hundred sixty-nine thousand, nine hundred twenty".