40013224040 has 32 divisors (see below), whose sum is σ = 94768164000. Its totient is φ = 15162905664.

The previous prime is 40013223989. The next prime is 40013224049. The reversal of 40013224040 is 4042231004.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (40013224049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26323730 + ... + 26325249.

It is an arithmetic number, because the mean of its divisors is an integer number (2961505125).

Almost surely, 2^40013224040 is an apocalyptic number.

40013224040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40013224040 is an abundant number, since it is smaller than the sum of its proper divisors (54754939960).

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

40013224040 is a wasteful number, since it uses less digits than its factorization.

40013224040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52649009 (or 52649005 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 40013224040 its reverse (4042231004), we get a palindrome (44055455044).

The spelling of 40013224040 in words is "forty billion, thirteen million, two hundred twenty-four thousand, forty".