16938615712 has 24 divisors (see below), whose sum is σ = 33352117092. Its totient is φ = 8468236800.

The previous prime is 16938615697. The next prime is 16938615721. The reversal of 16938615712 is 21751683961.

It can be written as a sum of positive squares in 2 ways, for example, as 16838695696 + 99920016 = 129764^2 + 9996^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264262 + ... + 322042.

Almost surely, 2^16938615712 is an apocalyptic number.

It is an amenable number.

16938615712 is a deficient number, since it is larger than the sum of its proper divisors (16413501380).

16938615712 is an equidigital number, since it uses as much as digits as its factorization.

16938615712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66952 (or 66944 counting only the distinct ones).

The product of its digits is 544320, while the sum is 49.

The spelling of 16938615712 in words is "sixteen billion, nine hundred thirty-eight million, six hundred fifteen thousand, seven hundred twelve".