77770000775 has 12 divisors (see below), whose sum is σ = 96801481392. Its totient is φ = 61979432640.

The previous prime is 77770000771. The next prime is 77770000783. The reversal of 77770000775 is 57700007777.

It is a happy number.

It is not a de Polignac number, because 77770000775 - 2² = 77770000771 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77770000771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5907494 + ... + 5920643.

It is an arithmetic number, because the mean of its divisors is an integer number (8066790116).

Almost surely, 2^77770000775 is an apocalyptic number.

77770000775 is a deficient number, since it is larger than the sum of its proper divisors (19031480617).

77770000775 is a wasteful number, since it uses less digits than its factorization.

77770000775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11828410 (or 11828405 counting only the distinct ones).

The product of its (nonzero) digits is 588245, while the sum is 47.

The spelling of 77770000775 in words is "seventy-seven billion, seven hundred seventy million, seven hundred seventy-five", and thus it is an aban number.