66570023575 has 12 divisors (see below), whose sum is σ = 90051086808. Its totient is φ = 48414562400.

The previous prime is 66570023557. The next prime is 66570023581. The reversal of 66570023575 is 57532007566.

It is not a de Polignac number, because 66570023575 - 2¹³ = 66570015383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121036132 + ... + 121036681.

It is an arithmetic number, because the mean of its divisors is an integer number (7504257234).

Almost surely, 2^66570023575 is an apocalyptic number.

66570023575 is a deficient number, since it is larger than the sum of its proper divisors (23481063233).

66570023575 is a wasteful number, since it uses less digits than its factorization.

66570023575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242072834 (or 242072829 counting only the distinct ones).

The product of its (nonzero) digits is 1323000, while the sum is 46.

The spelling of 66570023575 in words is "sixty-six billion, five hundred seventy million, twenty-three thousand, five hundred seventy-five".