40300320432 has 80 divisors (see below), whose sum is σ = 105632350208. Its totient is φ = 13237240320.

The previous prime is 40300320353. The next prime is 40300320433. The reversal of 40300320432 is 23402300304.

It is a junction number, because it is equal to n+sod(n) for n = 40300320399 and 40300320408.

It is not an unprimeable number, because it can be changed into a prime (40300320433) 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, 4308753 + ... + 4318095.

Almost surely, 2^40300320432 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 40300320432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52816175104).

40300320432 is an abundant number, since it is smaller than the sum of its proper divisors (65332029776).

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

40300320432 is a wasteful number, since it uses less digits than its factorization.

40300320432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10658 (or 10652 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 40300320432 its reverse (23402300304), we get a palindrome (63702620736).

The spelling of 40300320432 in words is "forty billion, three hundred million, three hundred twenty thousand, four hundred thirty-two".