40243912830 has 448 divisors, whose sum is σ = 128048465088. Its totient is φ = 8992788480.

The previous prime is 40243912823. The next prime is 40243912831. The reversal of 40243912830 is 3821934204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40243912831) by changing a digit.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 72250912 + ... + 72251468.

Almost surely, 2^40243912830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40243912830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64024232544).

40243912830 is an abundant number, since it is smaller than the sum of its proper divisors (87804552258).

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

40243912830 is a wasteful number, since it uses less digits than its factorization.

40243912830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 40243912830 in words is "forty billion, two hundred forty-three million, nine hundred twelve thousand, eight hundred thirty".