1166500253142 has 48 divisors (see below), whose sum is σ = 2894265504000. Its totient is φ = 332617861296.

The previous prime is 1166500253081. The next prime is 1166500253143. The reversal of 1166500253142 is 2413520056611.

1166500253142 is a `hidden beast` number, since 1 + 1 + 6 + 6 + 500 + 2 + 5 + 3 + 142 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1166500253097 and 1166500253106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166500253143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9213618 + ... + 9339365.

It is an arithmetic number, because the mean of its divisors is an integer number (60297198000).

Almost surely, 2^{1166500253142} is an apocalyptic number.

1166500253142 is an abundant number, since it is smaller than the sum of its proper divisors (1727765250858).

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

1166500253142 is a wasteful number, since it uses less digits than its factorization.

1166500253142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18553497 (or 18553494 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 1166500253142 in words is "one trillion, one hundred sixty-six billion, five hundred million, two hundred fifty-three thousand, one hundred forty-two".