66462732066 has 16 divisors (see below), whose sum is σ = 133693821504. Its totient is φ = 22026184464.

The previous prime is 66462732043. The next prime is 66462732079. The reversal of 66462732066 is 66023726466.

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, 32013766 + ... + 32015841.

It is an arithmetic number, because the mean of its divisors is an integer number (8355863844).

Almost surely, 2^66462732066 is an apocalyptic number.

66462732066 is an abundant number, since it is smaller than the sum of its proper divisors (67231089438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66462732066 is a wasteful number, since it uses less digits than its factorization.

66462732066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64029785.

The product of its (nonzero) digits is 2612736, while the sum is 48.

The spelling of 66462732066 in words is "sixty-six billion, four hundred sixty-two million, seven hundred thirty-two thousand, sixty-six".