116221979687481 has 40 divisors (see below), whose sum is σ = 179853832147968. Its totient is φ = 74715082344000.

The previous prime is 116221979687453. The next prime is 116221979687503. The reversal of 116221979687481 is 184786979122611.

116221979687481 is a `hidden beast` number, since 1 + 1 + 6 + 2 + 2 + 19 + 79 + 68 + 7 + 481 = 666.

It is not a de Polignac number, because 116221979687481 - 2¹⁷ = 116221979556409 is a prime.

It is a super-2 number, since 2×116221979687481² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (116221979687981) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 81652305 + ... + 83063486.

Almost surely, 2^{116221979687481} is an apocalyptic number.

It is an amenable number.

116221979687481 is a deficient number, since it is larger than the sum of its proper divisors (63631852460487).

116221979687481 is a wasteful number, since it uses less digits than its factorization.

116221979687481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164716115 (or 164716106 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 72.

The spelling of 116221979687481 in words is "one hundred sixteen trillion, two hundred twenty-one billion, nine hundred seventy-nine million, six hundred eighty-seven thousand, four hundred eighty-one".