15664897064960 has 704 divisors, whose sum is σ = 45728505897984. Its totient is φ = 5073430118400.

The previous prime is 15664897064959. The next prime is 15664897065007. The reversal of 15664897064960 is 6946079846651.

It is a tau number, because it is divible by the number of its divisors (704).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46483373912 + ... + 46483374248.

Almost surely, 2^{15664897064960} is an apocalyptic number.

15664897064960 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 15664897064960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22864252948992).

15664897064960 is an abundant number, since it is smaller than the sum of its proper divisors (30063608833024).

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

15664897064960 is an frugal number, since it uses more digits than its factorization.

15664897064960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 470292480, while the sum is 71.

The spelling of 15664897064960 in words is "fifteen trillion, six hundred sixty-four billion, eight hundred ninety-seven million, sixty-four thousand, nine hundred sixty".