16931216736 has 72 divisors (see below), whose sum is σ = 55026460944. Its totient is φ = 4837489920.

The previous prime is 16931216719. The next prime is 16931216747. The reversal of 16931216736 is 63761213961.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×16931216736² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 16931216691 and 16931216700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4197195 + ... + 4201226.

It is an arithmetic number, because the mean of its divisors is an integer number (764256402).

Almost surely, 2^16931216736 is an apocalyptic number.

16931216736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16931216736 is an abundant number, since it is smaller than the sum of its proper divisors (38095244208).

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

16931216736 is a wasteful number, since it uses less digits than its factorization.

16931216736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8398444 (or 8398433 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The spelling of 16931216736 in words is "sixteen billion, nine hundred thirty-one million, two hundred sixteen thousand, seven hundred thirty-six".