16776740931 has 12 divisors (see below), whose sum is σ = 22535792472. Its totient is φ = 11101117504.

The previous prime is 16776740927. The next prime is 16776740963. The reversal of 16776740931 is 13904767761.

It is not a de Polignac number, because 16776740931 - 2² = 16776740927 is a prime.

It is a super-2 number, since 2×16776740931² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16776740231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2622685 + ... + 2629073.

It is an arithmetic number, because the mean of its divisors is an integer number (1877982706).

Almost surely, 2^16776740931 is an apocalyptic number.

16776740931 is a deficient number, since it is larger than the sum of its proper divisors (5759051541).

16776740931 is an frugal number, since it uses more digits than its factorization.

16776740931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12918 (or 6529 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 51.

The spelling of 16776740931 in words is "sixteen billion, seven hundred seventy-six million, seven hundred forty thousand, nine hundred thirty-one".