66727822626 has 32 divisors (see below), whose sum is σ = 150315347520. Its totient is φ = 21937912992.

The previous prime is 66727822619. The next prime is 66727822633. The reversal of 66727822626 is 62622872766.

66727822626 is a `hidden beast` number, since 6 + 6 + 7 + 2 + 7 + 8 + 2 + 2 + 626 = 666.

It is an interprime number because it is at equal distance from previous prime (66727822619) and next prime (66727822633).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 8459760 + ... + 8467643.

It is an arithmetic number, because the mean of its divisors is an integer number (4697354610).

Almost surely, 2^66727822626 is an apocalyptic number.

66727822626 is an abundant number, since it is smaller than the sum of its proper divisors (83587524894).

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

66727822626 is a wasteful number, since it uses less digits than its factorization.

66727822626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16927487 (or 16927481 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 54.

The spelling of 66727822626 in words is "sixty-six billion, seven hundred twenty-seven million, eight hundred twenty-two thousand, six hundred twenty-six".