76747136617 has 4 divisors (see below), whose sum is σ = 77892616336. Its totient is φ = 75601656900.

The previous prime is 76747136569. The next prime is 76747136657. The reversal of 76747136617 is 71663174767.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76747136617 - 2¹⁹ = 76746612329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76747136657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572739759 + ... + 572739892.

It is an arithmetic number, because the mean of its divisors is an integer number (19473154084).

Almost surely, 2^76747136617 is an apocalyptic number.

It is an amenable number.

76747136617 is a deficient number, since it is larger than the sum of its proper divisors (1145479719).

76747136617 is a wasteful number, since it uses less digits than its factorization.

76747136617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145479718.

The product of its digits is 6223392, while the sum is 55.

The spelling of 76747136617 in words is "seventy-six billion, seven hundred forty-seven million, one hundred thirty-six thousand, six hundred seventeen".