77012520134 has 32 divisors (see below), whose sum is σ = 126408206880. Its totient is φ = 34898169600.

The previous prime is 77012520121. The next prime is 77012520149. The reversal of 77012520134 is 43102521077.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 77012520134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10181714 + ... + 10189274.

It is an arithmetic number, because the mean of its divisors is an integer number (3950256465).

Almost surely, 2^77012520134 is an apocalyptic number.

77012520134 is a deficient number, since it is larger than the sum of its proper divisors (49395686746).

77012520134 is a wasteful number, since it uses less digits than its factorization.

77012520134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8936.

The product of its (nonzero) digits is 11760, while the sum is 32.

The spelling of 77012520134 in words is "seventy-seven billion, twelve million, five hundred twenty thousand, one hundred thirty-four".