40351718840 has 64 divisors (see below), whose sum is σ = 96303699360. Its totient is φ = 15164108800.

The previous prime is 40351718839. The next prime is 40351718843. The reversal of 40351718840 is 4881715304.

40351718840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40351718840² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40351718843) 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, 330140 + ... + 435540.

Almost surely, 2^40351718840 is an apocalyptic number.

40351718840 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 40351718840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48151849680).

40351718840 is an abundant number, since it is smaller than the sum of its proper divisors (55951980520).

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

40351718840 is a wasteful number, since it uses less digits than its factorization.

40351718840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105992 (or 105988 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 40351718840 in words is "forty billion, three hundred fifty-one million, seven hundred eighteen thousand, eight hundred forty".