115615262381 has 2 divisors, whose sum is σ = 115615262382. Its totient is φ = 115615262380.

The previous prime is 115615262369. The next prime is 115615262387. The reversal of 115615262381 is 183262516511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115606800100 + 8462281 = 340010^2 + 2909^2 .

It is a cyclic number.

It is not a de Polignac number, because 115615262381 - 2⁶ = 115615262317 is a prime.

It is a super-2 number, since 2×115615262381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115615262387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57807631190 + 57807631191.

It is an arithmetic number, because the mean of its divisors is an integer number (57807631191).

Almost surely, 2^115615262381 is an apocalyptic number.

It is an amenable number.

115615262381 is a deficient number, since it is larger than the sum of its proper divisors (1).

115615262381 is an equidigital number, since it uses as much as digits as its factorization.

115615262381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 41.

Adding to 115615262381 its reverse (183262516511), we get a palindrome (298877778892).

The spelling of 115615262381 in words is "one hundred fifteen billion, six hundred fifteen million, two hundred sixty-two thousand, three hundred eighty-one".