261852283108580 has 24 divisors (see below), whose sum is σ = 551325538132992. Its totient is φ = 104467438271072.

The previous prime is 261852283108579. The next prime is 261852283108613. The reversal of 261852283108580 is 85801382258162.

It is a happy 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, 17092177922 + ... + 17092193241.

It is an arithmetic number, because the mean of its divisors is an integer number (22971897422208).

Almost surely, 2^{261852283108580} is an apocalyptic number.

261852283108580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261852283108580 is an abundant number, since it is smaller than the sum of its proper divisors (289473255024412).

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

261852283108580 is a wasteful number, since it uses less digits than its factorization.

261852283108580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34184371555 (or 34184371553 counting only the distinct ones).

The product of its (nonzero) digits is 14745600, while the sum is 59.

The spelling of 261852283108580 in words is "two hundred sixty-one trillion, eight hundred fifty-two billion, two hundred eighty-three million, one hundred eight thousand, five hundred eighty".