115915531663442 has 16 divisors (see below), whose sum is σ = 200162795034240. Its totient is φ = 49315471238688.

The previous prime is 115915531663439. The next prime is 115915531663483. The reversal of 115915531663442 is 244366135519511.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30217811342 + ... + 30217815177.

It is an arithmetic number, because the mean of its divisors is an integer number (12510174689640).

Almost surely, 2^{115915531663442} is an apocalyptic number.

115915531663442 is a deficient number, since it is larger than the sum of its proper divisors (84247263370798).

115915531663442 is a wasteful number, since it uses less digits than its factorization.

115915531663442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60435626665.

The product of its digits is 11664000, while the sum is 56.

The spelling of 115915531663442 in words is "one hundred fifteen trillion, nine hundred fifteen billion, five hundred thirty-one million, six hundred sixty-three thousand, four hundred forty-two".