40343078840 has 64 divisors (see below), whose sum is σ = 94576066560. Its totient is φ = 15470674560.

The previous prime is 40343078773. The next prime is 40343078843. The reversal of 40343078840 is 4887034304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40343078843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19352 + ... + 284711.

It is an arithmetic number, because the mean of its divisors is an integer number (1477751040).

Almost surely, 2^40343078840 is an apocalyptic number.

40343078840 is a gapful number since it is divisible by the number (40) 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 40343078840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47288033280).

40343078840 is an abundant number, since it is smaller than the sum of its proper divisors (54232987720).

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

40343078840 is a wasteful number, since it uses less digits than its factorization.

40343078840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304212 (or 304208 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 41.

The spelling of 40343078840 in words is "forty billion, three hundred forty-three million, seventy-eight thousand, eight hundred forty".