40681229784 has 72 divisors (see below), whose sum is σ = 110162965860. Its totient is φ = 12513349056.

The previous prime is 40681229761. The next prime is 40681229837. The reversal of 40681229784 is 48792218604.

40681229784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12843769 + ... + 12846935.

Almost surely, 2^40681229784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40681229784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55081482930).

40681229784 is an abundant number, since it is smaller than the sum of its proper divisors (69481736076).

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

40681229784 is an equidigital number, since it uses as much as digits as its factorization.

40681229784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6369 (or 3185 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 40681229784 in words is "forty billion, six hundred eighty-one million, two hundred twenty-nine thousand, seven hundred eighty-four".