74044396321 has 9 divisors (see below), whose sum is σ = 86135493171. Its totient is φ = 63464992752.

The previous prime is 74044396273. The next prime is 74044396429. The reversal of 74044396321 is 12369344047.

The square root of 74044396321 is 272111.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 73557576225 + 486820096 = 271215^2 + 22064^2 .

It is not a de Polignac number, because 74044396321 - 2⁷ = 74044396193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74044393321) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1885341 + ... + 1924213.

Almost surely, 2^74044396321 is an apocalyptic number.

74044396321 is the 272111-st square number.

74044396321 is the 136056-th centered octagonal number.

It is an amenable number.

74044396321 is a deficient number, since it is larger than the sum of its proper divisors (12091096850).

74044396321 is an frugal number, since it uses more digits than its factorization.

74044396321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77760 (or 38880 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 43.

The spelling of 74044396321 in words is "seventy-four billion, forty-four million, three hundred ninety-six thousand, three hundred twenty-one".