118385640828 has 192 divisors, whose sum is σ = 381652203520. Its totient is φ = 30900455424.

The previous prime is 118385640823. The next prime is 118385640889. The reversal of 118385640828 is 828046583811.

118385640828 is a `hidden beast` number, since 1 + 183 + 8 + 56 + 408 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118385640823) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 891225 + ... + 1015407.

Almost surely, 2^118385640828 is an apocalyptic number.

118385640828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118385640828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190826101760).

118385640828 is an abundant number, since it is smaller than the sum of its proper divisors (263266562692).

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

118385640828 is a wasteful number, since it uses less digits than its factorization.

118385640828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124313 (or 124305 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 54.

The spelling of 118385640828 in words is "one hundred eighteen billion, three hundred eighty-five million, six hundred forty thousand, eight hundred twenty-eight".