76777085969 has 4 divisors (see below), whose sum is σ = 76799234544. Its totient is φ = 76754937396.

The previous prime is 76777085963. The next prime is 76777085971. The reversal of 76777085969 is 96958077767.

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 a de Polignac number, because none of the positive numbers 2^k-76777085969 is a prime.

It is a super-2 number, since 2×76777085969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76777085963) 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, 11069087 + ... + 11076020.

It is an arithmetic number, because the mean of its divisors is an integer number (19199808636).

Almost surely, 2^76777085969 is an apocalyptic number.

It is an amenable number.

76777085969 is a deficient number, since it is larger than the sum of its proper divisors (22148575).

76777085969 is a wasteful number, since it uses less digits than its factorization.

76777085969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22148574.

The product of its (nonzero) digits is 280052640, while the sum is 71.

The spelling of 76777085969 in words is "seventy-six billion, seven hundred seventy-seven million, eighty-five thousand, nine hundred sixty-nine".