117944390040 has 128 divisors (see below), whose sum is σ = 364561041600. Its totient is φ = 30507130880.

The previous prime is 117944389973. The next prime is 117944390041. The reversal of 117944390040 is 40093449711.

It is a junction number, because it is equal to n+sod(n) for n = 117944389974 and 117944390001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117944390041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 781876 + ... + 920444.

Almost surely, 2^117944390040 is an apocalyptic number.

117944390040 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 117944390040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182280520800).

117944390040 is an abundant number, since it is smaller than the sum of its proper divisors (246616651560).

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

117944390040 is a wasteful number, since it uses less digits than its factorization.

117944390040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138797 (or 138793 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 117944390040 in words is "one hundred seventeen billion, nine hundred forty-four million, three hundred ninety thousand, forty".