77311700044 has 6 divisors (see below), whose sum is σ = 135295475084. Its totient is φ = 38655850020.

The previous prime is 77311700041. The next prime is 77311700069. The reversal of 77311700044 is 44000711377.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 77311699982 and 77311700009.

It is not an unprimeable number, because it can be changed into a prime (77311700041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9663962502 + ... + 9663962509.

Almost surely, 2^77311700044 is an apocalyptic number.

It is an amenable number.

77311700044 is a deficient number, since it is larger than the sum of its proper divisors (57983775040).

77311700044 is a wasteful number, since it uses less digits than its factorization.

77311700044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19327925015 (or 19327925013 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 34.

The spelling of 77311700044 in words is "seventy-seven billion, three hundred eleven million, seven hundred thousand, forty-four".