118845078788881 has 27 divisors (see below), whose sum is σ = 125074703368251. Its totient is φ = 112916424061584.

The previous prime is 118845078788879. The next prime is 118845078788921. The reversal of 118845078788881 is 188887870548811.

The square root of 118845078788881 is 10901609.

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

It can be written as a sum of positive squares in only one way, i.e., 34835315601025 + 84009763187856 = 5902145^2 + 9165684^2 .

It is not a de Polignac number, because 118845078788881 - 2¹ = 118845078788879 is a prime.

It is a super-2 number, since 2×118845078788881² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118845078788795 and 118845078788804.

It is not an unprimeable number, because it can be changed into a prime (118845078788581) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 39365708590 + ... + 39365711608.

Almost surely, 2^{118845078788881} is an apocalyptic number.

118845078788881 is the 10901609-th square number.

118845078788881 is the 5450805-th centered octagonal number.

It is an amenable number.

118845078788881 is a deficient number, since it is larger than the sum of its proper divisors (6229624579370).

118845078788881 is an frugal number, since it uses more digits than its factorization.

118845078788881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6398 (or 3199 counting only the distinct ones).

The product of its (nonzero) digits is 2055208960, while the sum is 82.

The spelling of 118845078788881 in words is "one hundred eighteen trillion, eight hundred forty-five billion, seventy-eight million, seven hundred eighty-eight thousand, eight hundred eighty-one".