74307421056 has 384 divisors, whose sum is σ = 236733840000. Its totient is φ = 20452311040.

The previous prime is 74307421033. The next prime is 74307421103. The reversal of 74307421056 is 65012470347.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35400295 + ... + 35402393.

It is an arithmetic number, because the mean of its divisors is an integer number (616494375).

Almost surely, 2^74307421056 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 74307421056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118366920000).

74307421056 is an abundant number, since it is smaller than the sum of its proper divisors (162426418944).

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

74307421056 is a wasteful number, since it uses less digits than its factorization.

74307421056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190 (or 2161 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The spelling of 74307421056 in words is "seventy-four billion, three hundred seven million, four hundred twenty-one thousand, fifty-six".