74827558321 has 4 divisors (see below), whose sum is σ = 74829701232. Its totient is φ = 74825415412.

The previous prime is 74827558313. The next prime is 74827558373. The reversal of 74827558321 is 12385572847.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74827558321 - 2³ = 74827558313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74827558121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018195 + ... + 1089208.

It is an arithmetic number, because the mean of its divisors is an integer number (18707425308).

Almost surely, 2^74827558321 is an apocalyptic number.

It is an amenable number.

74827558321 is a deficient number, since it is larger than the sum of its proper divisors (2142911).

74827558321 is a wasteful number, since it uses less digits than its factorization.

74827558321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142910.

The product of its digits is 3763200, while the sum is 52.

The spelling of 74827558321 in words is "seventy-four billion, eight hundred twenty-seven million, five hundred fifty-eight thousand, three hundred twenty-one".