40343808372 has 72 divisors (see below), whose sum is σ = 109667454624. Its totient is φ = 11509662528.

The previous prime is 40343808359. The next prime is 40343808413. The reversal of 40343808372 is 27380834304.

40343808372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 347403 + ... + 448749.

It is an arithmetic number, because the mean of its divisors is an integer number (1523159092).

Almost surely, 2^40343808372 is an apocalyptic number.

40343808372 is a gapful number since it is divisible by the number (42) 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 40343808372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54833727312).

40343808372 is an abundant number, since it is smaller than the sum of its proper divisors (69323646252).

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

40343808372 is a wasteful number, since it uses less digits than its factorization.

40343808372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102045 (or 102036 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 42.

The spelling of 40343808372 in words is "forty billion, three hundred forty-three million, eight hundred eight thousand, three hundred seventy-two".