66886617116 has 12 divisors (see below), whose sum is σ = 127692632760. Its totient is φ = 30403007760.

The previous prime is 66886617107. The next prime is 66886617157. The reversal of 66886617116 is 61171668866.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760075151 + ... + 760075238.

It is an arithmetic number, because the mean of its divisors is an integer number (10641052730).

Almost surely, 2^66886617116 is an apocalyptic number.

It is an amenable number.

66886617116 is a deficient number, since it is larger than the sum of its proper divisors (60806015644).

66886617116 is a wasteful number, since it uses less digits than its factorization.

66886617116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520150404 (or 1520150402 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 56.

The spelling of 66886617116 in words is "sixty-six billion, eight hundred eighty-six million, six hundred seventeen thousand, one hundred sixteen".