118601831335681 has 4 divisors (see below), whose sum is σ = 119203871088852. Its totient is φ = 117999791582512.

The previous prime is 118601831335657. The next prime is 118601831335699. The reversal of 118601831335681 is 186533138106811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73628498297025 + 44973333038656 = 8580705^2 + 6706216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118601831335681 is a prime.

It is a super-2 number, since 2×118601831335681² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118601831335601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301019876290 + ... + 301019876683.

It is an arithmetic number, because the mean of its divisors is an integer number (29800967772213).

Almost surely, 2^{118601831335681} is an apocalyptic number.

It is an amenable number.

118601831335681 is a deficient number, since it is larger than the sum of its proper divisors (602039753171).

118601831335681 is an equidigital number, since it uses as much as digits as its factorization.

118601831335681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602039753170.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 118601831335681 in words is "one hundred eighteen trillion, six hundred one billion, eight hundred thirty-one million, three hundred thirty-five thousand, six hundred eighty-one".