15992542208 has 22 divisors (see below), whose sum is σ = 31969468746. Its totient is φ = 7996270592.

The previous prime is 15992542171. The next prime is 15992542211. The reversal of 15992542208 is 80224529951.

It can be written as a sum of positive squares in only one way, i.e., 12622971904 + 3369570304 = 112352^2 + 58048^2 .

It is a super-2 number, since 2×15992542208² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7807835 + ... + 7809882.

Almost surely, 2^15992542208 is an apocalyptic number.

It is an amenable number.

15992542208 is a deficient number, since it is larger than the sum of its proper divisors (15976926538).

15992542208 is an equidigital number, since it uses as much as digits as its factorization.

15992542208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15617737 (or 15617719 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 15992542208 in words is "fifteen billion, nine hundred ninety-two million, five hundred forty-two thousand, two hundred eight".