1201116142566 has 32 divisors (see below), whose sum is σ = 2669934981600. Its totient is φ = 400253847840.

The previous prime is 1201116142549. The next prime is 1201116142571. The reversal of 1201116142566 is 6652416111021.

1201116142566 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 11 + 614 + 25 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1201116142566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3098625 + ... + 3464636.

It is an arithmetic number, because the mean of its divisors is an integer number (83435468175).

Almost surely, 2^{1201116142566} is an apocalyptic number.

1201116142566 is an abundant number, since it is smaller than the sum of its proper divisors (1468818839034).

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

1201116142566 is a wasteful number, since it uses less digits than its factorization.

1201116142566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6566661 (or 6566655 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 1201116142566 in words is "one trillion, two hundred one billion, one hundred sixteen million, one hundred forty-two thousand, five hundred sixty-six".