66766507042662 has 48 divisors (see below), whose sum is σ = 165327043633440. Its totient is φ = 19076092396416.

The previous prime is 66766507042643. The next prime is 66766507042693. The reversal of 66766507042662 is 26624070566766.

66766507042662 is a `hidden beast` number, since 6 + 6 + 7 + 66 + 507 + 0 + 4 + 2 + 6 + 62 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 66766507042662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87002628 + ... + 87766680.

It is an arithmetic number, because the mean of its divisors is an integer number (3444313409030).

Almost surely, 2^{66766507042662} is an apocalyptic number.

66766507042662 is an abundant number, since it is smaller than the sum of its proper divisors (98560536590778).

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

66766507042662 is a wasteful number, since it uses less digits than its factorization.

66766507042662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457597 (or 1457594 counting only the distinct ones).

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

The spelling of 66766507042662 in words is "sixty-six trillion, seven hundred sixty-six billion, five hundred seven million, forty-two thousand, six hundred sixty-two".