118211026961 has 4 divisors (see below), whose sum is σ = 122287269300. Its totient is φ = 114134784624.

The previous prime is 118211026949. The next prime is 118211026963. The reversal of 118211026961 is 169620112811.

It is a happy number.

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 24968740225 + 93242286736 = 158015^2 + 305356^2 .

It is a cyclic number.

It is not a de Polignac number, because 118211026961 - 2⁶ = 118211026897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118211026963) 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, 2038121126 + ... + 2038121183.

It is an arithmetic number, because the mean of its divisors is an integer number (30571817325).

Almost surely, 2^118211026961 is an apocalyptic number.

It is an amenable number.

118211026961 is a deficient number, since it is larger than the sum of its proper divisors (4076242339).

118211026961 is an equidigital number, since it uses as much as digits as its factorization.

118211026961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4076242338.

The product of its (nonzero) digits is 10368, while the sum is 38.

The spelling of 118211026961 in words is "one hundred eighteen billion, two hundred eleven million, twenty-six thousand, nine hundred sixty-one".