118191021040 has 80 divisors (see below), whose sum is σ = 282481553952. Its totient is φ = 45956201472.

The previous prime is 118191021037. The next prime is 118191021131. The reversal of 118191021040 is 40120191811.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3288447 + ... + 3324193.

Almost surely, 2^118191021040 is an apocalyptic number.

118191021040 is a gapful number since it is divisible by the number (10) 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 118191021040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141240776976).

118191021040 is an abundant number, since it is smaller than the sum of its proper divisors (164290532912).

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

118191021040 is a wasteful number, since it uses less digits than its factorization.

118191021040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36914 (or 36908 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 28.

The spelling of 118191021040 in words is "one hundred eighteen billion, one hundred ninety-one million, twenty-one thousand, forty".