66834012712 has 16 divisors (see below), whose sum is σ = 129634938900. Its totient is φ = 32264695680.

The previous prime is 66834012703. The next prime is 66834012731. The reversal of 66834012712 is 21721043866.

It can be written as a sum of positive squares in 2 ways, for example, as 66560904036 + 273108676 = 257994^2 + 16526^2 .

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 3 ways as a sum of consecutive naturals, for example, 144038589 + ... + 144039052.

Almost surely, 2^66834012712 is an apocalyptic number.

It is an amenable number.

66834012712 is a deficient number, since it is larger than the sum of its proper divisors (62800926188).

66834012712 is a wasteful number, since it uses less digits than its factorization.

66834012712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288077676 (or 288077672 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 66834012712 in words is "sixty-six billion, eight hundred thirty-four million, twelve thousand, seven hundred twelve".