66570625533 has 16 divisors (see below), whose sum is σ = 95574980160. Its totient is φ = 41061839616.

The previous prime is 66570625493. The next prime is 66570625579. The reversal of 66570625533 is 33552607566.

It is not a de Polignac number, because 66570625533 - 2¹⁰ = 66570624509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66570625633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11058910 + ... + 11064927.

It is an arithmetic number, because the mean of its divisors is an integer number (5973436260).

Almost surely, 2^66570625533 is an apocalyptic number.

It is an amenable number.

66570625533 is a deficient number, since it is larger than the sum of its proper divisors (29004354627).

66570625533 is a wasteful number, since it uses less digits than its factorization.

66570625533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22123916.

The product of its (nonzero) digits is 3402000, while the sum is 48.

The spelling of 66570625533 in words is "sixty-six billion, five hundred seventy million, six hundred twenty-five thousand, five hundred thirty-three".