74293949520 has 160 divisors (see below), whose sum is σ = 292458781440. Its totient is φ = 16981470720.

The previous prime is 74293949461. The next prime is 74293949531. The reversal of 74293949520 is 2594939247.

74293949520 is a `hidden beast` number, since 7 + 4 + 29 + 3 + 94 + 9 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2441691 + ... + 2471930.

It is an arithmetic number, because the mean of its divisors is an integer number (1827867384).

Almost surely, 2^74293949520 is an apocalyptic number.

74293949520 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

74293949520 is an abundant number, since it is smaller than the sum of its proper divisors (218164831920).

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

74293949520 is a wasteful number, since it uses less digits than its factorization.

74293949520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4913650 (or 4913638 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 74293949520 in words is "seventy-four billion, two hundred ninety-three million, nine hundred forty-nine thousand, five hundred twenty".