115213443021405 has 12 divisors (see below), whose sum is σ = 199703301237180. Its totient is φ = 61447169611392.

The previous prime is 115213443021337. The next prime is 115213443021437. The reversal of 115213443021405 is 504120344312511.

115213443021405 is a `hidden beast` number, since 1 + 1 + 5 + 2 + 1 + 3 + 4 + 430 + 214 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12111778119204 + 103101664902201 = 3480198^2 + 10153899^2 .

It is not a de Polignac number, because 115213443021405 - 2¹⁰ = 115213443020381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115213443021405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1280149366860 + ... + 1280149366949.

It is an arithmetic number, because the mean of its divisors is an integer number (16641941769765).

Almost surely, 2^{115213443021405} is an apocalyptic number.

115213443021405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115213443021405 is a deficient number, since it is larger than the sum of its proper divisors (84489858215775).

115213443021405 is a wasteful number, since it uses less digits than its factorization.

115213443021405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560298733820 (or 2560298733817 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 115213443021405 its reverse (504120344312511), we get a palindrome (619333787333916).

The spelling of 115213443021405 in words is "one hundred fifteen trillion, two hundred thirteen billion, four hundred forty-three million, twenty-one thousand, four hundred five".