66115516610322 has 24 divisors (see below), whose sum is σ = 143482458275676. Its totient is φ = 22002786723456.

The previous prime is 66115516610287. The next prime is 66115516610369. The reversal of 66115516610322 is 22301661551166.

66115516610322 is a `hidden beast` number, since 6 + 6 + 1 + 1 + 5 + 5 + 1 + 6 + 610 + 3 + 22 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 64904920336881 + 1210596273441 = 8056359^2 + 1100271^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2976556363 + ... + 2976578574.

Almost surely, 2^{66115516610322} is an apocalyptic number.

66115516610322 is an abundant number, since it is smaller than the sum of its proper divisors (77366941665354).

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

66115516610322 is a wasteful number, since it uses less digits than its factorization.

66115516610322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5953135562 (or 5953135559 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 66115516610322 in words is "sixty-six trillion, one hundred fifteen billion, five hundred sixteen million, six hundred ten thousand, three hundred twenty-two".