616766884465 has 16 divisors (see below), whose sum is σ = 741792481920. Its totient is φ = 492299631360.

The previous prime is 616766884451. The next prime is 616766884469. The reversal of 616766884465 is 564488667616.

It is not a de Polignac number, because 616766884465 - 2²⁷ = 616632666737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 616766884465.

It is not an unprimeable number, because it can be changed into a prime (616766884469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5316601 + ... + 5431369.

It is an arithmetic number, because the mean of its divisors is an integer number (46362030120).

Almost surely, 2^616766884465 is an apocalyptic number.

It is an amenable number.

616766884465 is a deficient number, since it is larger than the sum of its proper divisors (125025597455).

616766884465 is a wasteful number, since it uses less digits than its factorization.

616766884465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117192.

The product of its digits is 278691840, while the sum is 67.

The spelling of 616766884465 in words is "six hundred sixteen billion, seven hundred sixty-six million, eight hundred eighty-four thousand, four hundred sixty-five".