66292545816 has 96 divisors (see below), whose sum is σ = 209963170560. Its totient is φ = 18500239296.

The previous prime is 66292545733. The next prime is 66292545817. The reversal of 66292545816 is 61854529266.

66292545816 is a `hidden beast` number, since 6 + 6 + 2 + 9 + 2 + 54 + 581 + 6 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66292545817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1507780 + ... + 1551123.

It is an arithmetic number, because the mean of its divisors is an integer number (2187116360).

Almost surely, 2^66292545816 is an apocalyptic number.

It is an amenable number.

66292545816 is an abundant number, since it is smaller than the sum of its proper divisors (143670624744).

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

66292545816 is a wasteful number, since it uses less digits than its factorization.

66292545816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058965 (or 3058958 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The spelling of 66292545816 in words is "sixty-six billion, two hundred ninety-two million, five hundred forty-five thousand, eight hundred sixteen".