77154077005 has 12 divisors (see below), whose sum is σ = 97714251612. Its totient is φ = 58474667520.

The previous prime is 77154076991. The next prime is 77154077069. The reversal of 77154077005 is 50077045177.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 59832095236 + 17321981769 = 244606^2 + 131613^2 .

It is not a de Polignac number, because 77154077005 - 2⁵ = 77154076973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21370516 + ... + 21374125.

It is an arithmetic number, because the mean of its divisors is an integer number (8142854301).

Almost surely, 2^77154077005 is an apocalyptic number.

It is an amenable number.

77154077005 is a deficient number, since it is larger than the sum of its proper divisors (20560174607).

77154077005 is a wasteful number, since it uses less digits than its factorization.

77154077005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42744684 (or 42744665 counting only the distinct ones).

The product of its (nonzero) digits is 240100, while the sum is 43.

The spelling of 77154077005 in words is "seventy-seven billion, one hundred fifty-four million, seventy-seven thousand, five".