66534645122 has 16 divisors (see below), whose sum is σ = 108999050112. Its totient is φ = 30208527120.

The previous prime is 66534645041. The next prime is 66534645131. The reversal of 66534645122 is 22154643566.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1704938 + ... + 1743525.

It is an arithmetic number, because the mean of its divisors is an integer number (6812440632).

Almost surely, 2^66534645122 is an apocalyptic number.

66534645122 is a deficient number, since it is larger than the sum of its proper divisors (42464404990).

66534645122 is a wasteful number, since it uses less digits than its factorization.

66534645122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449353.

The product of its digits is 1036800, while the sum is 44.

The spelling of 66534645122 in words is "sixty-six billion, five hundred thirty-four million, six hundred forty-five thousand, one hundred twenty-two".