40043570432 has 72 divisors (see below), whose sum is σ = 82556391456. Its totient is φ = 19372824576.

The previous prime is 40043570429. The next prime is 40043570443. The reversal of 40043570432 is 23407534004.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1160858 + ... + 1194854.

It is an arithmetic number, because the mean of its divisors is an integer number (1146616548).

Almost surely, 2^40043570432 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 40043570432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41278195728).

40043570432 is an abundant number, since it is smaller than the sum of its proper divisors (42512821024).

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

40043570432 is a wasteful number, since it uses less digits than its factorization.

40043570432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34163 (or 34149 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 32.

The spelling of 40043570432 in words is "forty billion, forty-three million, five hundred seventy thousand, four hundred thirty-two".