40243641423072 has 96 divisors (see below), whose sum is σ = 111227210478720. Its totient is φ = 12705355491840.

The previous prime is 40243641423047. The next prime is 40243641423077. The reversal of 40243641423072 is 27032414634204.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40243641423077) 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, 4590783 + ... + 10077825.

It is an arithmetic number, because the mean of its divisors is an integer number (1158616775820).

Almost surely, 2^{40243641423072} 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 40243641423072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55613605239360).

40243641423072 is an abundant number, since it is smaller than the sum of its proper divisors (70983569055648).

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

40243641423072 is a wasteful number, since it uses less digits than its factorization.

40243641423072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5491096 (or 5491088 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 42.

The spelling of 40243641423072 in words is "forty trillion, two hundred forty-three billion, six hundred forty-one million, four hundred twenty-three thousand, seventy-two".