66575100575 has 12 divisors (see below), whose sum is σ = 82674014328. Its totient is φ = 53182087200.

The previous prime is 66575100533. The next prime is 66575100577. The reversal of 66575100575 is 57500157566.

It is not a de Polignac number, because 66575100575 - 2¹⁶ = 66575035039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66575100577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1932416 + ... + 1966565.

It is an arithmetic number, because the mean of its divisors is an integer number (6889501194).

Almost surely, 2^66575100575 is an apocalyptic number.

66575100575 is a deficient number, since it is larger than the sum of its proper divisors (16098913753).

66575100575 is a wasteful number, since it uses less digits than its factorization.

66575100575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899674 (or 3899669 counting only the distinct ones).

The product of its (nonzero) digits is 1102500, while the sum is 47.

The spelling of 66575100575 in words is "sixty-six billion, five hundred seventy-five million, one hundred thousand, five hundred seventy-five".