66151612267 has 16 divisors (see below), whose sum is σ = 71582591808. Its totient is φ = 60769820160.

The previous prime is 66151612249. The next prime is 66151612363. The reversal of 66151612267 is 76221615166.

It is a cyclic number.

It is not a de Polignac number, because 66151612267 - 2²⁷ = 66017394539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66151012267) 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, 7631778 + ... + 7640440.

It is an arithmetic number, because the mean of its divisors is an integer number (4473911988).

Almost surely, 2^66151612267 is an apocalyptic number.

66151612267 is a deficient number, since it is larger than the sum of its proper divisors (5430979541).

66151612267 is a wasteful number, since it uses less digits than its factorization.

66151612267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11430.

The product of its digits is 181440, while the sum is 43.

The spelling of 66151612267 in words is "sixty-six billion, one hundred fifty-one million, six hundred twelve thousand, two hundred sixty-seven".