166157489560 has 32 divisors (see below), whose sum is σ = 373907275200. Its totient is φ = 66453587200.

The previous prime is 166157489539. The next prime is 166157489579. The reversal of 166157489560 is 65984751661.

It is a super-2 number, since 2×166157489560² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166157489495 and 166157489504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4405 + ... + 576484.

It is an arithmetic number, because the mean of its divisors is an integer number (11684602350).

Almost surely, 2^166157489560 is an apocalyptic number.

166157489560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166157489560 is an abundant number, since it is smaller than the sum of its proper divisors (207749785640).

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

166157489560 is a wasteful number, since it uses less digits than its factorization.

166157489560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588051 (or 588047 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 166157489560 in words is "one hundred sixty-six billion, one hundred fifty-seven million, four hundred eighty-nine thousand, five hundred sixty".