116539621641 has 45 divisors (see below), whose sum is σ = 176599223031. Its totient is φ = 76589061408.

The previous prime is 116539621607. The next prime is 116539621673. The reversal of 116539621641 is 146126935611.

The square root of 116539621641 is 341379.

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

116539621641 is a `hidden beast` number, since 1 + 1 + 6 + 5 + 396 + 216 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 100790375625 + 15749246016 = 317475^2 + 125496^2 .

It is not a de Polignac number, because 116539621641 - 2¹⁷ = 116539490569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (116539621441) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 255009885 + ... + 255010341.

Almost surely, 2^116539621641 is an apocalyptic number.

116539621641 is the 341379-th square number.

116539621641 is the 170690-th centered octagonal number.

It is an amenable number.

116539621641 is a deficient number, since it is larger than the sum of its proper divisors (60059601390).

116539621641 is an frugal number, since it uses more digits than its factorization.

116539621641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092 (or 543 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The spelling of 116539621641 in words is "one hundred sixteen billion, five hundred thirty-nine million, six hundred twenty-one thousand, six hundred forty-one".