116638126081 has 4 divisors (see below), whose sum is σ = 116639127252. Its totient is φ = 116637124912.

The previous prime is 116638126067. The next prime is 116638126103. The reversal of 116638126081 is 180621836611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 23597875456 + 93040250625 = 153616^2 + 305025^2 .

It is a cyclic number.

It is not a de Polignac number, because 116638126081 - 2¹⁷ = 116637995009 is a prime.

It is a super-2 number, since 2×116638126081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116638126061) 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, 298690 + ... + 567883.

It is an arithmetic number, because the mean of its divisors is an integer number (29159781813).

Almost surely, 2^116638126081 is an apocalyptic number.

It is an amenable number.

116638126081 is a deficient number, since it is larger than the sum of its proper divisors (1001171).

116638126081 is an equidigital number, since it uses as much as digits as its factorization.

116638126081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001170.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 116638126081 in words is "one hundred sixteen billion, six hundred thirty-eight million, one hundred twenty-six thousand, eighty-one".