115711721506667 has 24 divisors (see below), whose sum is σ = 136690158128400. Its totient is φ = 97099192519680.

The previous prime is 115711721506651. The next prime is 115711721506673. The reversal of 115711721506667 is 766605127117511.

It is not a de Polignac number, because 115711721506667 - 2⁴ = 115711721506651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115711721506607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124179923 + ... + 125108259.

It is an arithmetic number, because the mean of its divisors is an integer number (5695423255350).

Almost surely, 2^{115711721506667} is an apocalyptic number.

115711721506667 is a deficient number, since it is larger than the sum of its proper divisors (20978436621733).

115711721506667 is a wasteful number, since it uses less digits than its factorization.

115711721506667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995423 (or 995410 counting only the distinct ones).

The product of its (nonzero) digits is 3704400, while the sum is 56.

The spelling of 115711721506667 in words is "one hundred fifteen trillion, seven hundred eleven billion, seven hundred twenty-one million, five hundred six thousand, six hundred sixty-seven".