666140615746067 has 16 divisors (see below), whose sum is σ = 830513544647424. Its totient is φ = 519070253940000.

The previous prime is 666140615746043. The next prime is 666140615746117. The reversal of 666140615746067 is 760647516041666.

It is not a de Polignac number, because 666140615746067 - 2¹⁶ = 666140615680531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 666140615745994 and 666140615746012.

It is not an unprimeable number, because it can be changed into a prime (666140615746007) 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, 198124892 + ... + 201459062.

It is an arithmetic number, because the mean of its divisors is an integer number (51907096540464).

Almost surely, 2^{666140615746067} is an apocalyptic number.

666140615746067 is a deficient number, since it is larger than the sum of its proper divisors (164372928901357).

666140615746067 is a wasteful number, since it uses less digits than its factorization.

666140615746067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5928890.

The product of its (nonzero) digits is 182891520, while the sum is 65.

The spelling of 666140615746067 in words is "six hundred sixty-six trillion, one hundred forty billion, six hundred fifteen million, seven hundred forty-six thousand, sixty-seven".