2158166050800 has 120 divisors (see below), whose sum is σ = 6913651585776. Its totient is φ = 575483781120.

The previous prime is 2158166050787. The next prime is 2158166050829. The reversal of 2158166050800 is 80506618512.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48742272 + ... + 48786528.

Almost surely, 2^{2158166050800} is an apocalyptic number.

2158166050800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2158166050800 is an abundant number, since it is smaller than the sum of its proper divisors (4755485534976).

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

2158166050800 is a wasteful number, since it uses less digits than its factorization.

2158166050800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84915 (or 84904 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 2158166050800 in words is "two trillion, one hundred fifty-eight billion, one hundred sixty-six million, fifty thousand, eight hundred".