40504021320 has 96 divisors (see below), whose sum is σ = 141350788800. Its totient is φ = 9258060672.

The previous prime is 40504021273. The next prime is 40504021351. The reversal of 40504021320 is 2312040504.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3438340 + ... + 3450099.

It is an arithmetic number, because the mean of its divisors is an integer number (1472404050).

Almost surely, 2^40504021320 is an apocalyptic number.

40504021320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40504021320 is an abundant number, since it is smaller than the sum of its proper divisors (100846767480).

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

40504021320 is a wasteful number, since it uses less digits than its factorization.

40504021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6888467 (or 6888456 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 40504021320 its reverse (2312040504), we get a palindrome (42816061824).

The spelling of 40504021320 in words is "forty billion, five hundred four million, twenty-one thousand, three hundred twenty".