30561530261166 has 96 divisors (see below), whose sum is σ = 67772870249760. Its totient is φ = 9950199148800.

The previous prime is 30561530261153. The next prime is 30561530261177. The reversal of 30561530261166 is 66116203516503.

It is a happy number.

30561530261166 is a `hidden beast` number, since 3 + 0 + 5 + 615 + 3 + 0 + 26 + 1 + 1 + 6 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 211296000 + ... + 211440588.

It is an arithmetic number, because the mean of its divisors is an integer number (705967398435).

Almost surely, 2^{30561530261166} is an apocalyptic number.

30561530261166 is an abundant number, since it is smaller than the sum of its proper divisors (37211339988594).

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

30561530261166 is a wasteful number, since it uses less digits than its factorization.

30561530261166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146002 (or 145999 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

Adding to 30561530261166 its reverse (66116203516503), we get a palindrome (96677733777669).

The spelling of 30561530261166 in words is "thirty trillion, five hundred sixty-one billion, five hundred thirty million, two hundred sixty-one thousand, one hundred sixty-six".