66656456159194 has 32 divisors (see below), whose sum is σ = 110276392786560. Its totient is φ = 29965212057600.

The previous prime is 66656456159147. The next prime is 66656456159233. The reversal of 66656456159194 is 49195165465666.

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, 17383527 + ... + 20868634.

It is an arithmetic number, because the mean of its divisors is an integer number (3446137274580).

Almost surely, 2^{66656456159194} is an apocalyptic number.

66656456159194 is a deficient number, since it is larger than the sum of its proper divisors (43619936627366).

66656456159194 is a wasteful number, since it uses less digits than its factorization.

66656456159194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38253046.

The product of its digits is 1259712000, while the sum is 73.

The spelling of 66656456159194 in words is "sixty-six trillion, six hundred fifty-six billion, four hundred fifty-six million, one hundred fifty-nine thousand, one hundred ninety-four".