66572942894 has 8 divisors (see below), whose sum is σ = 104201128080. Its totient is φ = 31839233536.

The previous prime is 66572942861. The next prime is 66572942929. The reversal of 66572942894 is 49824927566.

66572942894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723618899 + ... + 723618990.

It is an arithmetic number, because the mean of its divisors is an integer number (13025141010).

Almost surely, 2^66572942894 is an apocalyptic number.

66572942894 is a deficient number, since it is larger than the sum of its proper divisors (37628185186).

66572942894 is a wasteful number, since it uses less digits than its factorization.

66572942894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447237914.

The product of its digits is 52254720, while the sum is 62.

The spelling of 66572942894 in words is "sixty-six billion, five hundred seventy-two million, nine hundred forty-two thousand, eight hundred ninety-four".