261432014220260 has 24 divisors (see below), whose sum is σ = 591238555237176. Its totient is φ = 96528743712000.

The previous prime is 261432014220253. The next prime is 261432014220263. The reversal of 261432014220260 is 62022410234162.

It can be written as a sum of positive squares in 4 ways, for example, as 52244330944576 + 209187683275684 = 7228024^2 + 14463322^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 261432014220260.

It is not an unprimeable number, because it can be changed into a prime (261432014220263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502753873241 + ... + 502753873760.

It is an arithmetic number, because the mean of its divisors is an integer number (24634939801549).

Almost surely, 2^{261432014220260} is an apocalyptic number.

261432014220260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261432014220260 is an abundant number, since it is smaller than the sum of its proper divisors (329806541016916).

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

261432014220260 is a wasteful number, since it uses less digits than its factorization.

261432014220260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005507747023 (or 1005507747021 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 261432014220260 in words is "two hundred sixty-one trillion, four hundred thirty-two billion, fourteen million, two hundred twenty thousand, two hundred sixty".