74171394221392 has 20 divisors (see below), whose sum is σ = 154761466789300. Its totient is φ = 34232951179008.

The previous prime is 74171394221383. The next prime is 74171394221447. The reversal of 74171394221392 is 29312249317147.

It can be written as a sum of positive squares in 2 ways, for example, as 23607121168656 + 50564273052736 = 4858716^2 + 7110856^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178296620517 + ... + 178296620932.

It is an arithmetic number, because the mean of its divisors is an integer number (7738073339465).

Almost surely, 2^{74171394221392} is an apocalyptic number.

It is an amenable number.

74171394221392 is an abundant number, since it is smaller than the sum of its proper divisors (80590072567908).

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

74171394221392 is a wasteful number, since it uses less digits than its factorization.

74171394221392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356593241470 (or 356593241464 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 55.

The spelling of 74171394221392 in words is "seventy-four trillion, one hundred seventy-one billion, three hundred ninety-four million, two hundred twenty-one thousand, three hundred ninety-two".