16616764775 has 24 divisors (see below), whose sum is σ = 22196954304. Its totient is φ = 12266870400.

The previous prime is 16616764763. The next prime is 16616764783. The reversal of 16616764775 is 57746761661.

It is not a de Polignac number, because 16616764775 - 2⁶ = 16616764711 is a prime.

It is a super-2 number, since 2×16616764775² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16616764775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1329857 + ... + 1342293.

It is an arithmetic number, because the mean of its divisors is an integer number (924873096).

Almost surely, 2^16616764775 is an apocalyptic number.

16616764775 is a deficient number, since it is larger than the sum of its proper divisors (5580189529).

16616764775 is a wasteful number, since it uses less digits than its factorization.

16616764775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16571 (or 16566 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 56.

The spelling of 16616764775 in words is "sixteen billion, six hundred sixteen million, seven hundred sixty-four thousand, seven hundred seventy-five".