66214423376 has 20 divisors (see below), whose sum is σ = 131419481844. Its totient is φ = 32299718400.

The previous prime is 66214423313. The next prime is 66214423381. The reversal of 66214423376 is 67332441266.

It can be written as a sum of positive squares in 2 ways, for example, as 39173909776 + 27040513600 = 197924^2 + 164440^2 .

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, 50467655 + ... + 50468966.

Almost surely, 2^66214423376 is an apocalyptic number.

It is an amenable number.

66214423376 is a deficient number, since it is larger than the sum of its proper divisors (65205058468).

66214423376 is a wasteful number, since it uses less digits than its factorization.

66214423376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100936670 (or 100936664 counting only the distinct ones).

The product of its digits is 870912, while the sum is 44.

The spelling of 66214423376 in words is "sixty-six billion, two hundred fourteen million, four hundred twenty-three thousand, three hundred seventy-six".