66572251283 has 4 divisors (see below), whose sum is σ = 66615230400. Its totient is φ = 66529272168.

The previous prime is 66572251279. The next prime is 66572251303. The reversal of 66572251283 is 38215227566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66572251283 - 2² = 66572251279 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66572251883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21487235 + ... + 21490332.

It is an arithmetic number, because the mean of its divisors is an integer number (16653807600).

Almost surely, 2^66572251283 is an apocalyptic number.

66572251283 is a deficient number, since it is larger than the sum of its proper divisors (42979117).

66572251283 is a wasteful number, since it uses less digits than its factorization.

66572251283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42979116.

The product of its digits is 1209600, while the sum is 47.

The spelling of 66572251283 in words is "sixty-six billion, five hundred seventy-two million, two hundred fifty-one thousand, two hundred eighty-three".