116751372721 has 9 divisors (see below), whose sum is σ = 117165940033. Its totient is φ = 116338270720.

The previous prime is 116751372713. The next prime is 116751372733. The reversal of 116751372721 is 127273157611.

The square root of 116751372721 is 341689.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 39645190321 + 77106182400 = 199111^2 + 277680^2 .

It is not a de Polignac number, because 116751372721 - 2³ = 116751372713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116751372781) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 153417981 + ... + 153418741.

Almost surely, 2^116751372721 is an apocalyptic number.

116751372721 is the 341689-th square number.

116751372721 is the 170845-th centered octagonal number.

It is an amenable number.

116751372721 is a deficient number, since it is larger than the sum of its proper divisors (414567312).

116751372721 is an frugal number, since it uses more digits than its factorization.

116751372721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420 (or 1210 counting only the distinct ones).

The product of its digits is 123480, while the sum is 43.

The spelling of 116751372721 in words is "one hundred sixteen billion, seven hundred fifty-one million, three hundred seventy-two thousand, seven hundred twenty-one".