74923731506 has 8 divisors (see below), whose sum is σ = 121030643244. Its totient is φ = 34580183760.

The previous prime is 74923731503. The next prime is 74923731539. The reversal of 74923731506 is 60513732947.

It can be written as a sum of positive squares in 2 ways, for example, as 67852435225 + 7071296281 = 260485^2 + 84091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×74923731506² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74923731503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440840965 + ... + 1440841016.

Almost surely, 2^74923731506 is an apocalyptic number.

74923731506 is a deficient number, since it is larger than the sum of its proper divisors (46106911738).

74923731506 is a wasteful number, since it uses less digits than its factorization.

74923731506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881681996.

The product of its (nonzero) digits is 952560, while the sum is 47.

The spelling of 74923731506 in words is "seventy-four billion, nine hundred twenty-three million, seven hundred thirty-one thousand, five hundred six".