40400044023403 has 16 divisors (see below), whose sum is σ = 41622237454336. Its totient is φ = 39191372398080.

The previous prime is 40400044023343. The next prime is 40400044023553. The reversal of 40400044023403 is 30432044000404.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40400044023403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40400044026403) 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, 1027558 + ... + 9047428.

It is an arithmetic number, because the mean of its divisors is an integer number (2601389840896).

Almost surely, 2^{40400044023403} is an apocalyptic number.

40400044023403 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

40400044023403 is a deficient number, since it is larger than the sum of its proper divisors (1222193430933).

40400044023403 is a wasteful number, since it uses less digits than its factorization.

40400044023403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8020714.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 40400044023403 its reverse (30432044000404), we get a palindrome (70832088023807).

The spelling of 40400044023403 in words is "forty trillion, four hundred billion, forty-four million, twenty-three thousand, four hundred three".