16938357776 has 20 divisors (see below), whose sum is σ = 33057620412. Its totient is φ = 8407358976.

The previous prime is 16938357769. The next prime is 16938357811. The reversal of 16938357776 is 67775383961.

It can be written as a sum of positive squares in 2 ways, for example, as 12571791376 + 4366566400 = 112124^2 + 66080^2 .

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, 3861485 + ... + 3865868.

Almost surely, 2^16938357776 is an apocalyptic number.

16938357776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16938357776 is a deficient number, since it is larger than the sum of its proper divisors (16119262636).

16938357776 is a wasteful number, since it uses less digits than its factorization.

16938357776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7727498 (or 7727492 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 62.

The spelling of 16938357776 in words is "sixteen billion, nine hundred thirty-eight million, three hundred fifty-seven thousand, seven hundred seventy-six".