11415023261 has 2 divisors, whose sum is σ = 11415023262. Its totient is φ = 11415023260.

The previous prime is 11415023237. The next prime is 11415023273. The reversal of 11415023261 is 16232051411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6301343161 + 5113680100 = 79381^2 + 71510^2 .

It is a cyclic number.

It is not a de Polignac number, because 11415023261 - 2⁶ = 11415023197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11415023261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11415023231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5707511630 + 5707511631.

It is an arithmetic number, because the mean of its divisors is an integer number (5707511631).

Almost surely, 2^11415023261 is an apocalyptic number.

It is an amenable number.

11415023261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11415023261 is an equidigital number, since it uses as much as digits as its factorization.

11415023261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 11415023261 its reverse (16232051411), we get a palindrome (27647074672).

The spelling of 11415023261 in words is "eleven billion, four hundred fifteen million, twenty-three thousand, two hundred sixty-one".