261136113261210 has 96 divisors (see below), whose sum is σ = 740685887547840. Its totient is φ = 63304962739200.

The previous prime is 261136113261209. The next prime is 261136113261227. The reversal of 261136113261210 is 12162311631162.

261136113261210 is a `hidden beast` number, since 2 + 6 + 1 + 1 + 3 + 6 + 1 + 1 + 32 + 612 + 1 + 0 = 666.

261136113261210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 83012746 + ... + 86101034.

It is an arithmetic number, because the mean of its divisors is an integer number (7715477995290).

Almost surely, 2^{261136113261210} is an apocalyptic number.

261136113261210 is an abundant number, since it is smaller than the sum of its proper divisors (479549774286630).

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

261136113261210 is a wasteful number, since it uses less digits than its factorization.

261136113261210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173724 (or 3173721 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

Adding to 261136113261210 its reverse (12162311631162), we get a palindrome (273298424892372).

The spelling of 261136113261210 in words is "two hundred sixty-one trillion, one hundred thirty-six billion, one hundred thirteen million, two hundred sixty-one thousand, two hundred ten".