118421309895840 has 576 divisors, whose sum is σ = 464983115950080. Its totient is φ = 26884078018560.

The previous prime is 118421309895767. The next prime is 118421309895859. The reversal of 118421309895840 is 48598903124811.

118421309895840 is a `hidden beast` number, since 1 + 1 + 8 + 42 + 1 + 3 + 0 + 9 + 8 + 9 + 584 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1454069841 + ... + 1454151279.

It is an arithmetic number, because the mean of its divisors is an integer number (807262354080).

Almost surely, 2^{118421309895840} is an apocalyptic number.

118421309895840 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 118421309895840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232491557975040).

118421309895840 is an abundant number, since it is smaller than the sum of its proper divisors (346561806054240).

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

118421309895840 is a wasteful number, since it uses less digits than its factorization.

118421309895840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82445 (or 82434 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 63.

The spelling of 118421309895840 in words is "one hundred eighteen trillion, four hundred twenty-one billion, three hundred nine million, eight hundred ninety-five thousand, eight hundred forty".