15216056064 has 360 divisors, whose sum is σ = 52116113280. Its totient is φ = 4367001600.

The previous prime is 15216056059. The next prime is 15216056113. The reversal of 15216056064 is 46065061251.

15216056064 is a `hidden beast` number, since 15 + 21 + 6 + 0 + 560 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4332069 + ... + 4335579.

Almost surely, 2^15216056064 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 15216056064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26058056640).

15216056064 is an abundant number, since it is smaller than the sum of its proper divisors (36900057216).

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

15216056064 is a wasteful number, since it uses less digits than its factorization.

15216056064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569 (or 3546 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 15216056064 in words is "fifteen billion, two hundred sixteen million, fifty-six thousand, sixty-four".