118990990955 has 4 divisors (see below), whose sum is σ = 142789189152. Its totient is φ = 95192792760.

The previous prime is 118990990949. The next prime is 118990991057. The reversal of 118990990955 is 559099099811.

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

It is not a de Polignac number, because 118990990955 - 2¹⁸ = 118990728811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118990990891 and 118990990900.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11899099091 + ... + 11899099100.

It is an arithmetic number, because the mean of its divisors is an integer number (35697297288).

Almost surely, 2^118990990955 is an apocalyptic number.

118990990955 is a deficient number, since it is larger than the sum of its proper divisors (23798198197).

118990990955 is an equidigital number, since it uses as much as digits as its factorization.

118990990955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23798198196.

The product of its (nonzero) digits is 11809800, while the sum is 65.

The spelling of 118990990955 in words is "one hundred eighteen billion, nine hundred ninety million, nine hundred ninety thousand, nine hundred fifty-five".