74723872434 has 32 divisors (see below), whose sum is σ = 153119223936. Its totient is φ = 24296254080.

The previous prime is 74723872427. The next prime is 74723872451. The reversal of 74723872434 is 43427832747.

It is a super-2 number, since 2×74723872434² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1609819 + ... + 1655585.

It is an arithmetic number, because the mean of its divisors is an integer number (4784975748).

Almost surely, 2^74723872434 is an apocalyptic number.

74723872434 is an abundant number, since it is smaller than the sum of its proper divisors (78395351502).

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

74723872434 is a wasteful number, since it uses less digits than its factorization.

74723872434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52450.

The product of its digits is 6322176, while the sum is 51.

The spelling of 74723872434 in words is "seventy-four billion, seven hundred twenty-three million, eight hundred seventy-two thousand, four hundred thirty-four".