74672702520 has 256 divisors, whose sum is σ = 252634152960. Its totient is φ = 17519327232.

The previous prime is 74672702519. The next prime is 74672702527. The reversal of 74672702520 is 2520727647.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74672702527) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10509289 + ... + 10516391.

It is an arithmetic number, because the mean of its divisors is an integer number (986852160).

Almost surely, 2^74672702520 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 74672702520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126317076480).

74672702520 is an abundant number, since it is smaller than the sum of its proper divisors (177961450440).

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

74672702520 is a wasteful number, since it uses less digits than its factorization.

74672702520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7446 (or 7442 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 42.

The spelling of 74672702520 in words is "seventy-four billion, six hundred seventy-two million, seven hundred two thousand, five hundred twenty".