74074815720 has 48 divisors (see below), whose sum is σ = 240743152260. Its totient is φ = 19753284096.

The previous prime is 74074815707. The next prime is 74074815761. The reversal of 74074815720 is 2751847047.

74074815720 is a `hidden beast` number, since 7 + 4 + 0 + 74 + 8 + 1 + 572 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 64697992164 + 9376823556 = 254358^2 + 96834^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 102881329 + ... + 102882048.

Almost surely, 2^74074815720 is an apocalyptic number.

It is an amenable number.

74074815720 is an abundant number, since it is smaller than the sum of its proper divisors (166668336540).

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

74074815720 is a wasteful number, since it uses less digits than its factorization.

74074815720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205763394 (or 205763387 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 45.

The spelling of 74074815720 in words is "seventy-four billion, seventy-four million, eight hundred fifteen thousand, seven hundred twenty".