23315271400261 has 16 divisors (see below), whose sum is σ = 23902999741440. Its totient is φ = 22733252975680.

The previous prime is 23315271400207. The next prime is 23315271400321. The reversal of 23315271400261 is 16200417251332.

It is a cyclic number.

It is not a de Polignac number, because 23315271400261 - 2²⁵ = 23315237845829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23315271400261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23315251400261) 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, 9185211 + ... + 11445463.

It is an arithmetic number, because the mean of its divisors is an integer number (1493937483840).

Almost surely, 2^{23315271400261} is an apocalyptic number.

It is an amenable number.

23315271400261 is a deficient number, since it is larger than the sum of its proper divisors (587728341179).

23315271400261 is a wasteful number, since it uses less digits than its factorization.

23315271400261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261516.

The product of its (nonzero) digits is 60480, while the sum is 37.

Adding to 23315271400261 its reverse (16200417251332), we get a palindrome (39515688651593).

The spelling of 23315271400261 in words is "twenty-three trillion, three hundred fifteen billion, two hundred seventy-one million, four hundred thousand, two hundred sixty-one".