74774557536 has 96 divisors (see below), whose sum is σ = 229795066368. Its totient is φ = 20843074560.

The previous prime is 74774557483. The next prime is 74774557621. The reversal of 74774557536 is 63575547747.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 74774557536.

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, 1329420 + ... + 1384523.

It is an arithmetic number, because the mean of its divisors is an integer number (2393698608).

Almost surely, 2^74774557536 is an apocalyptic number.

It is an amenable number.

74774557536 is an abundant number, since it is smaller than the sum of its proper divisors (155020508832).

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

74774557536 is a wasteful number, since it uses less digits than its factorization.

74774557536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714004 (or 2713996 counting only the distinct ones).

The product of its digits is 86436000, while the sum is 60.

The spelling of 74774557536 in words is "seventy-four billion, seven hundred seventy-four million, five hundred fifty-seven thousand, five hundred thirty-six".