66165110667 has 48 divisors (see below), whose sum is σ = 99430688448. Its totient is φ = 42364892160.

The previous prime is 66165110659. The next prime is 66165110677. The reversal of 66165110667 is 76601156166.

66165110667 is a `hidden beast` number, since 66 + 16 + 511 + 0 + 6 + 67 = 666.

It is not a de Polignac number, because 66165110667 - 2³ = 66165110659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66165110677) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16510378 + ... + 16514384.

It is an arithmetic number, because the mean of its divisors is an integer number (2071472676).

Almost surely, 2^66165110667 is an apocalyptic number.

66165110667 is a deficient number, since it is larger than the sum of its proper divisors (33265577781).

66165110667 is a wasteful number, since it uses less digits than its factorization.

66165110667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4740 (or 4737 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 66165110667 in words is "sixty-six billion, one hundred sixty-five million, one hundred ten thousand, six hundred sixty-seven".