77773576412 has 24 divisors (see below), whose sum is σ = 162310073856. Its totient is φ = 31882335408.

The previous prime is 77773576411. The next prime is 77773576417. The reversal of 77773576412 is 21467537777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77773576411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60382568 + ... + 60383855.

It is an arithmetic number, because the mean of its divisors is an integer number (6762919744).

Almost surely, 2^77773576412 is an apocalyptic number.

It is an amenable number.

77773576412 is an abundant number, since it is smaller than the sum of its proper divisors (84536497444).

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

77773576412 is a wasteful number, since it uses less digits than its factorization.

77773576412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120766457 (or 120766455 counting only the distinct ones).

The product of its digits is 12101040, while the sum is 56.

The spelling of 77773576412 in words is "seventy-seven billion, seven hundred seventy-three million, five hundred seventy-six thousand, four hundred twelve".