15068621616 has 20 divisors (see below), whose sum is σ = 38927272632. Its totient is φ = 5022873856.

The previous prime is 15068621567. The next prime is 15068621621. The reversal of 15068621616 is 61612686051.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156964761 + ... + 156964856.

Almost surely, 2^15068621616 is an apocalyptic number.

15068621616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15068621616 is an abundant number, since it is smaller than the sum of its proper divisors (23858651016).

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

15068621616 is a wasteful number, since it uses less digits than its factorization.

15068621616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313929628 (or 313929622 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 15068621616 in words is "fifteen billion, sixty-eight million, six hundred twenty-one thousand, six hundred sixteen".