666140615750038 has 32 divisors (see below), whose sum is σ = 1173901481518752. Its totient is φ = 279498765369600.

The previous prime is 666140615750021. The next prime is 666140615750041. The reversal of 666140615750038 is 830057516041666.

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, 103618498 + ... + 109859338.

It is an arithmetic number, because the mean of its divisors is an integer number (36684421297461).

Almost surely, 2^{666140615750038} is an apocalyptic number.

666140615750038 is a deficient number, since it is larger than the sum of its proper divisors (507760865768714).

666140615750038 is a wasteful number, since it uses less digits than its factorization.

666140615750038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6614080.

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 666140615750038 in words is "six hundred sixty-six trillion, one hundred forty billion, six hundred fifteen million, seven hundred fifty thousand, thirty-eight".