77165776776 has 64 divisors (see below), whose sum is σ = 210545786880. Its totient is φ = 23373161280.

The previous prime is 77165776771. The next prime is 77165776777. The reversal of 77165776776 is 67767756177.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (77165776771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539865 + ... + 667671.

It is an arithmetic number, because the mean of its divisors is an integer number (3289777920).

Almost surely, 2^77165776776 is an apocalyptic number.

It is an amenable number.

77165776776 is an abundant number, since it is smaller than the sum of its proper divisors (133380010104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77165776776 is a wasteful number, since it uses less digits than its factorization.

77165776776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130114 (or 130110 counting only the distinct ones).

The product of its digits is 127060920, while the sum is 66.

The spelling of 77165776776 in words is "seventy-seven billion, one hundred sixty-five million, seven hundred seventy-six thousand, seven hundred seventy-six".