265105561230 has 128 divisors (see below), whose sum is σ = 725128588800. Its totient is φ = 68884687872.

The previous prime is 265105561199. The next prime is 265105561247. The reversal of 265105561230 is 32165501562.

265105561230 is a `hidden beast` number, since 2 + 6 + 5 + 1 + 0 + 5 + 5 + 612 + 30 = 666.

It is a super-2 number, since 2×265105561230² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4837342 + ... + 4891838.

It is an arithmetic number, because the mean of its divisors is an integer number (5665067100).

Almost surely, 2^265105561230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265105561230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362564294400).

265105561230 is an abundant number, since it is smaller than the sum of its proper divisors (460023027570).

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

265105561230 is a wasteful number, since it uses less digits than its factorization.

265105561230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54975 (or 54969 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 265105561230 in words is "two hundred sixty-five billion, one hundred five million, five hundred sixty-one thousand, two hundred thirty".