166615061056 has 56 divisors (see below), whose sum is σ = 336240282560. Its totient is φ = 81904753152.

The previous prime is 166615060991. The next prime is 166615061069. The reversal of 166615061056 is 650160516661.

166615061056 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 825370 + ... + 1007206.

It is an arithmetic number, because the mean of its divisors is an integer number (6004290760).

Almost surely, 2^166615061056 is an apocalyptic number.

166615061056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166615061056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168120141280).

166615061056 is an abundant number, since it is smaller than the sum of its proper divisors (169625221504).

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

166615061056 is a wasteful number, since it uses less digits than its factorization.

166615061056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182091 (or 182081 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 166615061056 in words is "one hundred sixty-six billion, six hundred fifteen million, sixty-one thousand, fifty-six".