77106796961 has 6 divisors (see below), whose sum is σ = 79674349986. Its totient is φ = 74619480000.

The previous prime is 77106796957. The next prime is 77106796967. The reversal of 77106796961 is 16969760177.

It can be written as a sum of positive squares in only one way, i.e., 76995705361 + 111091600 = 277481^2 + 10540^2 .

It is not a de Polignac number, because 77106796961 - 2² = 77106796957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 77106796961.

It is not an unprimeable number, because it can be changed into a prime (77106796967) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40117040 + ... + 40118961.

It is an arithmetic number, because the mean of its divisors is an integer number (13279058331).

Almost surely, 2^77106796961 is an apocalyptic number.

It is an amenable number.

77106796961 is a deficient number, since it is larger than the sum of its proper divisors (2567553025).

77106796961 is an equidigital number, since it uses as much as digits as its factorization.

77106796961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80236063 (or 80236032 counting only the distinct ones).

The product of its (nonzero) digits is 6001128, while the sum is 59.

The spelling of 77106796961 in words is "seventy-seven billion, one hundred six million, seven hundred ninety-six thousand, nine hundred sixty-one".