665432614167 has 16 divisors (see below), whose sum is σ = 939747744000. Its totient is φ = 417387028352.

The previous prime is 665432614157. The next prime is 665432614219. The reversal of 665432614167 is 761416234566.

It is a cyclic number.

It is not a de Polignac number, because 665432614167 - 2²² = 665428419863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665432614157) 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, 2022393 + ... + 2328290.

It is an arithmetic number, because the mean of its divisors is an integer number (58734234000).

Almost surely, 2^665432614167 is an apocalyptic number.

665432614167 is a deficient number, since it is larger than the sum of its proper divisors (274315129833).

665432614167 is a wasteful number, since it uses less digits than its factorization.

665432614167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4353702.

The product of its digits is 4354560, while the sum is 51.

The spelling of 665432614167 in words is "six hundred sixty-five billion, four hundred thirty-two million, six hundred fourteen thousand, one hundred sixty-seven".