66213676427562 has 56 divisors (see below), whose sum is σ = 148915597178880. Its totient is φ = 22070788790760.

The previous prime is 66213676427537. The next prime is 66213676427597. The reversal of 66213676427562 is 26572467631266.

66213676427562 is a `hidden beast` number, since 6 + 6 + 2 + 1 + 3 + 6 + 7 + 64 + 2 + 7 + 562 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 66213676427562.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 77958237 + ... + 78803007.

It is an arithmetic number, because the mean of its divisors is an integer number (2659207092480).

Almost surely, 2^{66213676427562} is an apocalyptic number.

66213676427562 is an abundant number, since it is smaller than the sum of its proper divisors (82701920751318).

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

66213676427562 is an equidigital number, since it uses as much as digits as its factorization.

66213676427562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898550 (or 898535 counting only the distinct ones).

The product of its digits is 182891520, while the sum is 63.

The spelling of 66213676427562 in words is "sixty-six trillion, two hundred thirteen billion, six hundred seventy-six million, four hundred twenty-seven thousand, five hundred sixty-two".