77045716426212 has 18 divisors (see below), whose sum is σ = 194754449855238. Its totient is φ = 25681905475392.

The previous prime is 77045716426171. The next prime is 77045716426223. The reversal of 77045716426212 is 21262461754077.

77045716426212 is a `hidden beast` number, since 7 + 7 + 0 + 4 + 5 + 7 + 1 + 6 + 4 + 2 + 621 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 64014944872356 + 13030771553856 = 8000934^2 + 3609816^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1070079394773 + ... + 1070079394844.

Almost surely, 2^{77045716426212} is an apocalyptic number.

It is an amenable number.

77045716426212 is an abundant number, since it is smaller than the sum of its proper divisors (117708733429026).

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

77045716426212 is a wasteful number, since it uses less digits than its factorization.

77045716426212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140158789627 (or 2140158789622 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 54.

The spelling of 77045716426212 in words is "seventy-seven trillion, forty-five billion, seven hundred sixteen million, four hundred twenty-six thousand, two hundred twelve".