66822918474 has 32 divisors (see below), whose sum is σ = 144061102080. Its totient is φ = 20541638592.

The previous prime is 66822918427. The next prime is 66822918529. The reversal of 66822918474 is 47481922866.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317322 + ... + 484085.

It is an arithmetic number, because the mean of its divisors is an integer number (4501909440).

Almost surely, 2^66822918474 is an apocalyptic number.

66822918474 is an abundant number, since it is smaller than the sum of its proper divisors (77238183606).

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

66822918474 is a wasteful number, since it uses less digits than its factorization.

66822918474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802494.

The product of its digits is 9289728, while the sum is 57.

The spelling of 66822918474 in words is "sixty-six billion, eight hundred twenty-two million, nine hundred eighteen thousand, four hundred seventy-four".