74572434520 has 16 divisors (see below), whose sum is σ = 167787977760. Its totient is φ = 29828973792.

The previous prime is 74572434439. The next prime is 74572434523. The reversal of 74572434520 is 2543427547.

It is a super-2 number, since 2×74572434520² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74572434523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932155392 + ... + 932155471.

It is an arithmetic number, because the mean of its divisors is an integer number (10486748610).

Almost surely, 2^74572434520 is an apocalyptic number.

It is an amenable number.

74572434520 is an abundant number, since it is smaller than the sum of its proper divisors (93215543240).

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

74572434520 is a wasteful number, since it uses less digits than its factorization.

74572434520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864310874 (or 1864310870 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 43.

The spelling of 74572434520 in words is "seventy-four billion, five hundred seventy-two million, four hundred thirty-four thousand, five hundred twenty".