77526782612 has 12 divisors (see below), whose sum is σ = 135749275956. Its totient is φ = 38741275200.

The previous prime is 77526782581. The next prime is 77526782629. The reversal of 77526782612 is 21628762577.

It can be written as a sum of positive squares in 2 ways, for example, as 44688268816 + 32838513796 = 211396^2 + 181214^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5521139 + ... + 5535162.

It is an arithmetic number, because the mean of its divisors is an integer number (11312439663).

Almost surely, 2^77526782612 is an apocalyptic number.

It is an amenable number.

77526782612 is a deficient number, since it is larger than the sum of its proper divisors (58222493344).

77526782612 is a wasteful number, since it uses less digits than its factorization.

77526782612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11058058 (or 11058056 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 53.

The spelling of 77526782612 in words is "seventy-seven billion, five hundred twenty-six million, seven hundred eighty-two thousand, six hundred twelve".