66723312675 has 48 divisors (see below), whose sum is σ = 116952292352. Its totient is φ = 33507043200.

The previous prime is 66723312641. The next prime is 66723312707. The reversal of 66723312675 is 57621332766.

It is not a de Polignac number, because 66723312675 - 2⁶ = 66723312611 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 301789 + ... + 473838.

Almost surely, 2^66723312675 is an apocalyptic number.

66723312675 is a deficient number, since it is larger than the sum of its proper divisors (50228979677).

66723312675 is a wasteful number, since it uses less digits than its factorization.

66723312675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775708 (or 775703 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 48.

The spelling of 66723312675 in words is "sixty-six billion, seven hundred twenty-three million, three hundred twelve thousand, six hundred seventy-five".