66426862466 has 32 divisors (see below), whose sum is σ = 106370288640. Its totient is φ = 31002566400.

The previous prime is 66426862451. The next prime is 66426862487.

It is a happy number.

66426862466 is nontrivially palindromic in base 10.

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, 9969176 + ... + 9975836.

It is an arithmetic number, because the mean of its divisors is an integer number (3324071520).

Almost surely, 2^66426862466 is an apocalyptic number.

66426862466 is a deficient number, since it is larger than the sum of its proper divisors (39943426174).

66426862466 is a wasteful number, since it uses less digits than its factorization.

66426862466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9050.

The product of its digits is 23887872, while the sum is 56.

The spelling of 66426862466 in words is "sixty-six billion, four hundred twenty-six million, eight hundred sixty-two thousand, four hundred sixty-six".