16515151696 has 20 divisors (see below), whose sum is σ = 32076354100. Its totient is φ = 8237382912.

The previous prime is 16515151691. The next prime is 16515151727. The reversal of 16515151696 is 69615151561.

It can be written as a sum of positive squares in 2 ways, for example, as 13331935296 + 3183216400 = 115464^2 + 56420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16515151691) 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, 1255311 + ... + 1268398.

It is an arithmetic number, because the mean of its divisors is an integer number (1603817705).

Almost surely, 2^16515151696 is an apocalyptic number.

16515151696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16515151696 is a deficient number, since it is larger than the sum of its proper divisors (15561202404).

16515151696 is a wasteful number, since it uses less digits than its factorization.

16515151696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524126 (or 2524120 counting only the distinct ones).

The product of its digits is 243000, while the sum is 46.

The spelling of 16515151696 in words is "sixteen billion, five hundred fifteen million, one hundred fifty-one thousand, six hundred ninety-six".