40540320404 has 24 divisors (see below), whose sum is σ = 71190345408. Its totient is φ = 20200340160.

The previous prime is 40540320391. The next prime is 40540320413. The reversal of 40540320404 is 40402304504.

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, 1413632 + ... + 1442024.

It is an arithmetic number, because the mean of its divisors is an integer number (2966264392).

Almost surely, 2^40540320404 is an apocalyptic number.

It is an amenable number.

40540320404 is a deficient number, since it is larger than the sum of its proper divisors (30650025004).

40540320404 is a wasteful number, since it uses less digits than its factorization.

40540320404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29615 (or 29613 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

Adding to 40540320404 its reverse (40402304504), we get a palindrome (80942624908).

The spelling of 40540320404 in words is "forty billion, five hundred forty million, three hundred twenty thousand, four hundred four".