1201700556666 has 24 divisors (see below), whose sum is σ = 2687674364544. Its totient is φ = 387645340680.

The previous prime is 1201700556659. The next prime is 1201700556671. The reversal of 1201700556666 is 6666550071021.

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, 1076792056 + ... + 1076793171.

It is an arithmetic number, because the mean of its divisors is an integer number (111986431856).

Almost surely, 2^{1201700556666} is an apocalyptic number.

1201700556666 is an abundant number, since it is smaller than the sum of its proper divisors (1485973807878).

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

1201700556666 is a wasteful number, since it uses less digits than its factorization.

1201700556666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153585266 (or 2153585263 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 1201700556666 in words is "one trillion, two hundred one billion, seven hundred million, five hundred fifty-six thousand, six hundred sixty-six".