666235115123075 has 6 divisors (see below), whose sum is σ = 826131542752644. Its totient is φ = 532988092098440.

The previous prime is 666235115123063. The next prime is 666235115123141. The reversal of 666235115123075 is 570321511532666.

It is not a de Polignac number, because 666235115123075 - 2²² = 666235110928771 is a prime.

It is a Duffinian 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, 13324702302437 + ... + 13324702302486.

It is an arithmetic number, because the mean of its divisors is an integer number (137688590458774).

Almost surely, 2^{666235115123075} is an apocalyptic number.

666235115123075 is a deficient number, since it is larger than the sum of its proper divisors (159896427629569).

666235115123075 is a wasteful number, since it uses less digits than its factorization.

666235115123075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26649404604933 (or 26649404604928 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 53.

The spelling of 666235115123075 in words is "six hundred sixty-six trillion, two hundred thirty-five billion, one hundred fifteen million, one hundred twenty-three thousand, seventy-five".