261560026130 has 64 divisors (see below), whose sum is σ = 544410574848. Its totient is φ = 89614801920.

The previous prime is 261560026099. The next prime is 261560026157. The reversal of 261560026130 is 31620065162.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 676562 + ... + 990381.

It is an arithmetic number, because the mean of its divisors is an integer number (8506415232).

Almost surely, 2^261560026130 is an apocalyptic number.

261560026130 is an abundant number, since it is smaller than the sum of its proper divisors (282850548718).

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

261560026130 is a wasteful number, since it uses less digits than its factorization.

261560026130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667051.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 261560026130 in words is "two hundred sixty-one billion, five hundred sixty million, twenty-six thousand, one hundred thirty".