115905051481 has 2 divisors, whose sum is σ = 115905051482. Its totient is φ = 115905051480.

The previous prime is 115905051421. The next prime is 115905051491. The reversal of 115905051481 is 184150509511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94768544025 + 21136507456 = 307845^2 + 145384^2 .

It is a cyclic number.

It is not a de Polignac number, because 115905051481 - 2³³ = 107315116889 is a prime.

It is a super-2 number, since 2×115905051481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (115905051421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57952525740 + 57952525741.

It is an arithmetic number, because the mean of its divisors is an integer number (57952525741).

Almost surely, 2^115905051481 is an apocalyptic number.

It is an amenable number.

115905051481 is a deficient number, since it is larger than the sum of its proper divisors (1).

115905051481 is an equidigital number, since it uses as much as digits as its factorization.

115905051481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 40.

The spelling of 115905051481 in words is "one hundred fifteen billion, nine hundred five million, fifty-one thousand, four hundred eighty-one".