666140076112215 has 16 divisors (see below), whose sum is σ = 1065831282330336. Its totient is φ = 355272320409600.

The previous prime is 666140076112193. The next prime is 666140076112253. The reversal of 666140076112215 is 512211670041666.

It is not a de Polignac number, because 666140076112215 - 2⁶ = 666140076112151 is a prime.

It is a super-3 number, since 3×666140076112215³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146869866 + ... + 151337495.

It is an arithmetic number, because the mean of its divisors is an integer number (66614455145646).

Almost surely, 2^{666140076112215} is an apocalyptic number.

666140076112215 is a deficient number, since it is larger than the sum of its proper divisors (399691206218121).

666140076112215 is a wasteful number, since it uses less digits than its factorization.

666140076112215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298356290.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 666140076112215 in words is "six hundred sixty-six trillion, one hundred forty billion, seventy-six million, one hundred twelve thousand, two hundred fifteen".