166610001561056 has 48 divisors (see below), whose sum is σ = 328207664386224. Its totient is φ = 83255679197184.

The previous prime is 166610001561043. The next prime is 166610001561079. The reversal of 166610001561056 is 650165100016661.

It is a junction number, because it is equal to n+sod(n) for n = 166610001560998 and 166610001561016.

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, 1214706176 + ... + 1214843328.

It is an arithmetic number, because the mean of its divisors is an integer number (6837659674713).

Almost surely, 2^{166610001561056} is an apocalyptic number.

166610001561056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166610001561056 is a deficient number, since it is larger than the sum of its proper divisors (161597662825168).

166610001561056 is a wasteful number, since it uses less digits than its factorization.

166610001561056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159363 (or 159355 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 166610001561056 in words is "one hundred sixty-six trillion, six hundred ten billion, one million, five hundred sixty-one thousand, fifty-six".