15649296072 has 16 divisors (see below), whose sum is σ = 39123240240. Its totient is φ = 5216432016.

The previous prime is 15649296041. The next prime is 15649296073. The reversal of 15649296072 is 27069294651.

It is a super-2 number, since 2×15649296072² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15649296073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326026978 + ... + 326027025.

It is an arithmetic number, because the mean of its divisors is an integer number (2445202515).

Almost surely, 2^15649296072 is an apocalyptic number.

15649296072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15649296072 is an abundant number, since it is smaller than the sum of its proper divisors (23473944168).

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

15649296072 is a wasteful number, since it uses less digits than its factorization.

15649296072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652054012 (or 652054008 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 15649296072 in words is "fifteen billion, six hundred forty-nine million, two hundred ninety-six thousand, seventy-two".