261136261036313 has 16 divisors (see below), whose sum is σ = 284068763596800. Its totient is φ = 238611221284800.

The previous prime is 261136261036253. The next prime is 261136261036349. The reversal of 261136261036313 is 313630162631162.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-261136261036313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261136261036513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15109433 + ... + 27396486.

It is an arithmetic number, because the mean of its divisors is an integer number (17754297724800).

Almost surely, 2^{261136261036313} is an apocalyptic number.

It is an amenable number.

261136261036313 is a deficient number, since it is larger than the sum of its proper divisors (22932502560487).

261136261036313 is a wasteful number, since it uses less digits than its factorization.

261136261036313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42510712.

The product of its (nonzero) digits is 419904, while the sum is 44.

The spelling of 261136261036313 in words is "two hundred sixty-one trillion, one hundred thirty-six billion, two hundred sixty-one million, thirty-six thousand, three hundred thirteen".