74351166621 has 8 divisors (see below), whose sum is σ = 99137177664. Its totient is φ = 49566300000.

The previous prime is 74351166613. The next prime is 74351166679. The reversal of 74351166621 is 12666115347.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74351166621 - 2³ = 74351166613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74351166601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120880 + ... + 404121.

It is an arithmetic number, because the mean of its divisors is an integer number (12392147208).

Almost surely, 2^74351166621 is an apocalyptic number.

It is an amenable number.

74351166621 is a deficient number, since it is larger than the sum of its proper divisors (24786011043).

74351166621 is a wasteful number, since it uses less digits than its factorization.

74351166621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572211.

The product of its digits is 181440, while the sum is 42.

The spelling of 74351166621 in words is "seventy-four billion, three hundred fifty-one million, one hundred sixty-six thousand, six hundred twenty-one".