74931601608 has 64 divisors (see below), whose sum is σ = 210994660800. Its totient is φ = 24635041920.

The previous prime is 74931601603. The next prime is 74931601621. The reversal of 74931601608 is 80610613947.

It is a happy number.

74931601608 is a `hidden beast` number, since 7 + 4 + 9 + 31 + 6 + 0 + 1 + 608 = 666.

It is a super-2 number, since 2×74931601608² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74931601603) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2360298 + ... + 2391833.

It is an arithmetic number, because the mean of its divisors is an integer number (3296791575).

Almost surely, 2^74931601608 is an apocalyptic number.

It is an amenable number.

74931601608 is an abundant number, since it is smaller than the sum of its proper divisors (136063059192).

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

74931601608 is a wasteful number, since it uses less digits than its factorization.

74931601608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752219 (or 4752209 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 74931601608 in words is "seventy-four billion, nine hundred thirty-one million, six hundred one thousand, six hundred eight".