16115516530 has 16 divisors (see below), whose sum is σ = 29120805720. Its totient is φ = 6421123072.

The previous prime is 16115516471. The next prime is 16115516581. The reversal of 16115516530 is 3561551161.

It can be written as a sum of positive squares in 4 ways, for example, as 15544354329 + 571162201 = 124677^2 + 23899^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3132745 + ... + 3137884.

Almost surely, 2^16115516530 is an apocalyptic number.

16115516530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16115516530 is a deficient number, since it is larger than the sum of its proper divisors (13005289190).

16115516530 is a wasteful number, since it uses less digits than its factorization.

16115516530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6270893.

The product of its (nonzero) digits is 13500, while the sum is 34.

The spelling of 16115516530 in words is "sixteen billion, one hundred fifteen million, five hundred sixteen thousand, five hundred thirty".