66377988977366 has 32 divisors (see below), whose sum is σ = 108647441392896. Its totient is φ = 30163782564000.

The previous prime is 66377988977359. The next prime is 66377988977371.

66377988977366 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2454521441 + ... + 2454548483.

It is an arithmetic number, because the mean of its divisors is an integer number (3395232543528).

Almost surely, 2^{66377988977366} is an apocalyptic number.

66377988977366 is a deficient number, since it is larger than the sum of its proper divisors (42269452415530).

66377988977366 is a wasteful number, since it uses less digits than its factorization.

66377988977366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52628.

The product of its digits is 145179288576, while the sum is 92.

The spelling of 66377988977366 in words is "sixty-six trillion, three hundred seventy-seven billion, nine hundred eighty-eight million, nine hundred seventy-seven thousand, three hundred sixty-six".