74605474944 has 768 divisors, whose sum is σ = 297689333760. Its totient is φ = 17302118400.

The previous prime is 74605474921. The next prime is 74605474987. The reversal of 74605474944 is 44947450647.

It is a happy number.

74605474944 is a `hidden beast` number, since 7 + 4 + 6 + 0 + 547 + 4 + 94 + 4 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 35746669 + ... + 35748755.

It is an arithmetic number, because the mean of its divisors is an integer number (387616320).

Almost surely, 2^74605474944 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 74605474944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148844666880).

74605474944 is an abundant number, since it is smaller than the sum of its proper divisors (223083858816).

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

74605474944 is a wasteful number, since it uses less digits than its factorization.

74605474944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 2154 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 54.

The spelling of 74605474944 in words is "seventy-four billion, six hundred five million, four hundred seventy-four thousand, nine hundred forty-four".