66667068575 has 6 divisors (see below), whose sum is σ = 82667165064. Its totient is φ = 53333654840.

The previous prime is 66667068547. The next prime is 66667068649. The reversal of 66667068575 is 57586076666.

It is a happy number.

It is not a de Polignac number, because 66667068575 - 2⁶ = 66667068511 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 5 ways as a sum of consecutive naturals, for example, 1333341347 + ... + 1333341396.

It is an arithmetic number, because the mean of its divisors is an integer number (13777860844).

Almost surely, 2^66667068575 is an apocalyptic number.

66667068575 is a deficient number, since it is larger than the sum of its proper divisors (16000096489).

66667068575 is a wasteful number, since it uses less digits than its factorization.

66667068575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666682753 (or 2666682748 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 62.

The spelling of 66667068575 in words is "sixty-six billion, six hundred sixty-seven million, sixty-eight thousand, five hundred seventy-five".