76661660747331 has 48 divisors (see below), whose sum is σ = 124963992511488. Its totient is φ = 44866569844800.

The previous prime is 76661660747297. The next prime is 76661660747369. The reversal of 76661660747331 is 13374706616667.

It is not a de Polignac number, because 76661660747331 - 2²¹ = 76661658650179 is a prime.

It is a super-2 number, since 2×76661660747331² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76661660745331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25311276 + ... + 28177721.

It is an arithmetic number, because the mean of its divisors is an integer number (2603416510656).

Almost surely, 2^{76661660747331} is an apocalyptic number.

76661660747331 is a deficient number, since it is larger than the sum of its proper divisors (48302331764157).

76661660747331 is a wasteful number, since it uses less digits than its factorization.

76661660747331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53489512 (or 53489509 counting only the distinct ones).

The product of its (nonzero) digits is 96018048, while the sum is 63.

The spelling of 76661660747331 in words is "seventy-six trillion, six hundred sixty-one billion, six hundred sixty million, seven hundred forty-seven thousand, three hundred thirty-one".