666140616201613 has 16 divisors (see below), whose sum is σ = 762387917550336. Its totient is φ = 570164524312320.

The previous prime is 666140616201601. The next prime is 666140616201617. The reversal of 666140616201613 is 316102616041666.

It is not a de Polignac number, because 666140616201613 - 2²⁹ = 666140079330701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666140616201617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61463445 + ... + 71484517.

It is an arithmetic number, because the mean of its divisors is an integer number (47649244846896).

Almost surely, 2^{666140616201613} is an apocalyptic number.

It is an amenable number.

666140616201613 is a deficient number, since it is larger than the sum of its proper divisors (96247301348723).

666140616201613 is a wasteful number, since it uses less digits than its factorization.

666140616201613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10034604.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 666140616201613 in words is "six hundred sixty-six trillion, one hundred forty billion, six hundred sixteen million, two hundred one thousand, six hundred thirteen".