74520953856 has 528 divisors, whose sum is σ = 241414992000. Its totient is φ = 22889889792.

The previous prime is 74520953839. The next prime is 74520953861. The reversal of 74520953856 is 65835902547.

74520953856 is a `hidden beast` number, since 7 + 4 + 52 + 0 + 9 + 538 + 56 = 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 165970720 + ... + 165971168.

Almost surely, 2^74520953856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74520953856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120707496000).

74520953856 is an abundant number, since it is smaller than the sum of its proper divisors (166894038144).

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

74520953856 is a wasteful number, since it uses less digits than its factorization.

74520953856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 54.

The spelling of 74520953856 in words is "seventy-four billion, five hundred twenty million, nine hundred fifty-three thousand, eight hundred fifty-six".