74445790772 has 6 divisors (see below), whose sum is σ = 130280133858. Its totient is φ = 37222895384.

The previous prime is 74445790759. The next prime is 74445790777. The reversal of 74445790772 is 27709754447.

It can be written as a sum of positive squares in only one way, i.e., 74356563856 + 89226916 = 272684^2 + 9446^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74445790777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9305723843 + ... + 9305723850.

It is an arithmetic number, because the mean of its divisors is an integer number (21713355643).

Almost surely, 2^74445790772 is an apocalyptic number.

It is an amenable number.

74445790772 is a deficient number, since it is larger than the sum of its proper divisors (55834343086).

74445790772 is a wasteful number, since it uses less digits than its factorization.

74445790772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18611447697 (or 18611447695 counting only the distinct ones).

The product of its (nonzero) digits is 13829760, while the sum is 56.

The spelling of 74445790772 in words is "seventy-four billion, four hundred forty-five million, seven hundred ninety thousand, seven hundred seventy-two".