40405689016 has 64 divisors (see below), whose sum is σ = 94587264000. Its totient is φ = 15720408960.

The previous prime is 40405689011. The next prime is 40405689059. The reversal of 40405689016 is 61098650404.

40405689016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40405689011) 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, 397290 + ... + 488518.

It is an arithmetic number, because the mean of its divisors is an integer number (1477926000).

Almost surely, 2^40405689016 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 40405689016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47293632000).

40405689016 is an abundant number, since it is smaller than the sum of its proper divisors (54181574984).

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

40405689016 is a wasteful number, since it uses less digits than its factorization.

40405689016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91972 (or 91968 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 40405689016 in words is "forty billion, four hundred five million, six hundred eighty-nine thousand, sixteen".