2166570570120 has 128 divisors (see below), whose sum is σ = 7398881418240. Its totient is φ = 502393168640.

The previous prime is 2166570570113. The next prime is 2166570570137. The reversal of 2166570570120 is 210750756612.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35650974 + ... + 35711693.

It is an arithmetic number, because the mean of its divisors is an integer number (57803761080).

Almost surely, 2^{2166570570120} is an apocalyptic number.

2166570570120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2166570570120 is an abundant number, since it is smaller than the sum of its proper divisors (5232310848120).

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

2166570570120 is a wasteful number, since it uses less digits than its factorization.

2166570570120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71362715 (or 71362711 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 42.

The spelling of 2166570570120 in words is "two trillion, one hundred sixty-six billion, five hundred seventy million, five hundred seventy thousand, one hundred twenty".