74505720231 has 12 divisors (see below), whose sum is σ = 107629601352. Its totient is φ = 49665759696.

The previous prime is 74505720229. The next prime is 74505720253. The reversal of 74505720231 is 13202750547.

74505720231 is a `hidden beast` number, since 7 + 4 + 50 + 572 + 0 + 2 + 31 = 666.

It is not a de Polignac number, because 74505720231 - 2¹ = 74505720229 is a prime.

It is a super-2 number, since 2×74505720231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74505720131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 292036 + ... + 484041.

It is an arithmetic number, because the mean of its divisors is an integer number (8969133446).

Almost surely, 2^74505720231 is an apocalyptic number.

74505720231 is a deficient number, since it is larger than the sum of its proper divisors (33123881121).

74505720231 is a wasteful number, since it uses less digits than its factorization.

74505720231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786750 (or 786747 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The spelling of 74505720231 in words is "seventy-four billion, five hundred five million, seven hundred twenty thousand, two hundred thirty-one".