66954087194 has 16 divisors (see below), whose sum is σ = 106056924480. Its totient is φ = 31613110560.

The previous prime is 66954087163. The next prime is 66954087247. The reversal of 66954087194 is 49178045966.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2820899 + ... + 2844534.

It is an arithmetic number, because the mean of its divisors is an integer number (6628557780).

Almost surely, 2^66954087194 is an apocalyptic number.

66954087194 is a deficient number, since it is larger than the sum of its proper divisors (39102837286).

66954087194 is a wasteful number, since it uses less digits than its factorization.

66954087194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5665765.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 66954087194 in words is "sixty-six billion, nine hundred fifty-four million, eighty-seven thousand, one hundred ninety-four".