115051661501 has 4 divisors (see below), whose sum is σ = 131487613152. Its totient is φ = 98615709852.

The previous prime is 115051661411. The next prime is 115051661503. The reversal of 115051661501 is 105166150511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115051661501 - 2²⁶ = 114984552637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115051661503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8217975815 + ... + 8217975828.

It is an arithmetic number, because the mean of its divisors is an integer number (32871903288).

Almost surely, 2^115051661501 is an apocalyptic number.

It is an amenable number.

115051661501 is a deficient number, since it is larger than the sum of its proper divisors (16435951651).

115051661501 is an equidigital number, since it uses as much as digits as its factorization.

115051661501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16435951650.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 115051661501 in words is "one hundred fifteen billion, fifty-one million, six hundred sixty-one thousand, five hundred one".