74574573922 has 4 divisors (see below), whose sum is σ = 111861860886. Its totient is φ = 37287286960.

The previous prime is 74574573907. The next prime is 74574573923. The reversal of 74574573922 is 22937547547.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 56505568681 + 18069005241 = 237709^2 + 134421^2 .

It is a super-2 number, since 2×74574573922² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74574573923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18643643479 + ... + 18643643482.

Almost surely, 2^74574573922 is an apocalyptic number.

74574573922 is a deficient number, since it is larger than the sum of its proper divisors (37287286964).

74574573922 is a wasteful number, since it uses less digits than its factorization.

74574573922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37287286963.

The product of its digits is 14817600, while the sum is 55.

The spelling of 74574573922 in words is "seventy-four billion, five hundred seventy-four million, five hundred seventy-three thousand, nine hundred twenty-two".