74445188972 has 96 divisors (see below), whose sum is σ = 163403412480. Its totient is φ = 28830597120.

The previous prime is 74445188969. The next prime is 74445189037. The reversal of 74445188972 is 27988154447.

It is a super-2 number, since 2×74445188972² (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 31 ways as a sum of consecutive naturals, for example, 60870353 + ... + 60871575.

It is an arithmetic number, because the mean of its divisors is an integer number (1702118880).

Almost surely, 2^74445188972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74445188972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81701706240).

74445188972 is an abundant number, since it is smaller than the sum of its proper divisors (88958223508).

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

74445188972 is a wasteful number, since it uses less digits than its factorization.

74445188972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271 (or 2269 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 59.

The spelling of 74445188972 in words is "seventy-four billion, four hundred forty-five million, one hundred eighty-eight thousand, nine hundred seventy-two".