40243715064 has 192 divisors, whose sum is σ = 126780825600. Its totient is φ = 11294857728.

The previous prime is 40243715053. The next prime is 40243715279. The reversal of 40243715064 is 46051734204.

40243715064 is a `hidden beast` number, since 40 + 2 + 43 + 71 + 506 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9674217 + ... + 9678375.

It is an arithmetic number, because the mean of its divisors is an integer number (660316800).

Almost surely, 2^40243715064 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 40243715064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63390412800).

40243715064 is an abundant number, since it is smaller than the sum of its proper divisors (86537110536).

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

40243715064 is a wasteful number, since it uses less digits than its factorization.

40243715064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4514 (or 4507 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 40243715064 in words is "forty billion, two hundred forty-three million, seven hundred fifteen thousand, sixty-four".