118232781550 has 48 divisors (see below), whose sum is σ = 240843491280. Its totient is φ = 42915248640.

The previous prime is 118232781529. The next prime is 118232781637. The reversal of 118232781550 is 55187232811.

It is a junction number, because it is equal to n+sod(n) for n = 118232781497 and 118232781506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1503147 + ... + 1579846.

It is an arithmetic number, because the mean of its divisors is an integer number (5017572735).

Almost surely, 2^118232781550 is an apocalyptic number.

118232781550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118232781550 is an abundant number, since it is smaller than the sum of its proper divisors (122610709730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118232781550 is a wasteful number, since it uses less digits than its factorization.

118232781550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083077 (or 3083072 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 43.

The spelling of 118232781550 in words is "one hundred eighteen billion, two hundred thirty-two million, seven hundred eighty-one thousand, five hundred fifty".