261440702465115 has 8 divisors (see below), whose sum is σ = 418305123944208. Its totient is φ = 139435041314720.

The previous prime is 261440702465053. The next prime is 261440702465119. The reversal of 261440702465115 is 511564207044162.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 261440702465115 - 2⁶ = 261440702465051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261440702465119) 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, 8714690082156 + ... + 8714690082185.

It is an arithmetic number, because the mean of its divisors is an integer number (52288140493026).

Almost surely, 2^{261440702465115} is an apocalyptic number.

261440702465115 is a deficient number, since it is larger than the sum of its proper divisors (156864421479093).

261440702465115 is a wasteful number, since it uses less digits than its factorization.

261440702465115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17429380164349.

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 261440702465115 in words is "two hundred sixty-one trillion, four hundred forty billion, seven hundred two million, four hundred sixty-five thousand, one hundred fifteen".