15652491988 has 36 divisors (see below), whose sum is σ = 32725205940. Its totient is φ = 6526904832.

The previous prime is 15652491971. The next prime is 15652492019. The reversal of 15652491988 is 88919425651.

15652491988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5668885264 + 9983606724 = 75292^2 + 99918^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1071933 + ... + 1086436.

Almost surely, 2^15652491988 is an apocalyptic number.

It is an amenable number.

15652491988 is an abundant number, since it is smaller than the sum of its proper divisors (17072713952).

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

15652491988 is a wasteful number, since it uses less digits than its factorization.

15652491988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158424 (or 2158415 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 58.

The spelling of 15652491988 in words is "fifteen billion, six hundred fifty-two million, four hundred ninety-one thousand, nine hundred eighty-eight".