118701990557 has 4 divisors (see below), whose sum is σ = 118717160220. Its totient is φ = 118686820896.

The previous prime is 118701990529. The next prime is 118701990569. The reversal of 118701990557 is 755099107811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 755099107811 = 3821 ⋅197618191.

It can be written as a sum of positive squares in 2 ways, for example, as 56327427556 + 62374563001 = 237334^2 + 249749^2 .

It is a cyclic number.

It is not a de Polignac number, because 118701990557 - 2⁸ = 118701990301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118701990499 and 118701990508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118701990457) 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, 7573088 + ... + 7588745.

It is an arithmetic number, because the mean of its divisors is an integer number (29679290055).

Almost surely, 2^118701990557 is an apocalyptic number.

It is an amenable number.

118701990557 is a deficient number, since it is larger than the sum of its proper divisors (15169663).

118701990557 is an equidigital number, since it uses as much as digits as its factorization.

118701990557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15169662.

The product of its (nonzero) digits is 793800, while the sum is 53.

The spelling of 118701990557 in words is "one hundred eighteen billion, seven hundred one million, nine hundred ninety thousand, five hundred fifty-seven".