77731046634 has 16 divisors (see below), whose sum is σ = 157591711872. Its totient is φ = 25555412448.

The previous prime is 77731046599. The next prime is 77731046647. The reversal of 77731046634 is 43664013777.

It is a super-2 number, since 2×77731046634² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88733634 + ... + 88734509.

It is an arithmetic number, because the mean of its divisors is an integer number (9849481992).

Almost surely, 2^77731046634 is an apocalyptic number.

77731046634 is an abundant number, since it is smaller than the sum of its proper divisors (79860665238).

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

77731046634 is a wasteful number, since it uses less digits than its factorization.

77731046634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177468221.

The product of its (nonzero) digits is 1778112, while the sum is 48.

The spelling of 77731046634 in words is "seventy-seven billion, seven hundred thirty-one million, forty-six thousand, six hundred thirty-four".