66572613375 has 32 divisors (see below), whose sum is σ = 111032935104. Its totient is φ = 35423308800.

The previous prime is 66572613347. The next prime is 66572613379. The reversal of 66572613375 is 57331627566.

It is not a de Polignac number, because 66572613375 - 2⁹ = 66572612863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66572613379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42622 + ... + 367371.

It is an arithmetic number, because the mean of its divisors is an integer number (3469779222).

Almost surely, 2^66572613375 is an apocalyptic number.

66572613375 is a deficient number, since it is larger than the sum of its proper divisors (44460321729).

66572613375 is a wasteful number, since it uses less digits than its factorization.

66572613375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410444 (or 410434 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 51.

The spelling of 66572613375 in words is "sixty-six billion, five hundred seventy-two million, six hundred thirteen thousand, three hundred seventy-five".