66877653795 has 32 divisors (see below), whose sum is σ = 114663693312. Its totient is φ = 33165491712.

The previous prime is 66877653751. The next prime is 66877653881. The reversal of 66877653795 is 59735677866.

It is not a de Polignac number, because 66877653795 - 2¹⁹ = 66877129507 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1558747 + ... + 1601076.

It is an arithmetic number, because the mean of its divisors is an integer number (3583240416).

Almost surely, 2^66877653795 is an apocalyptic number.

66877653795 is a deficient number, since it is larger than the sum of its proper divisors (47786039517).

66877653795 is a wasteful number, since it uses less digits than its factorization.

66877653795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159931.

The product of its digits is 400075200, while the sum is 69.

The spelling of 66877653795 in words is "sixty-six billion, eight hundred seventy-seven million, six hundred fifty-three thousand, seven hundred ninety-five".