40021403244043 has 24 divisors (see below), whose sum is σ = 44504709100368. Its totient is φ = 35953430228352.

The previous prime is 40021403243981. The next prime is 40021403244077. The reversal of 40021403244043 is 34044230412004.

It is not a de Polignac number, because 40021403244043 - 2⁹ = 40021403243531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40021403243996 and 40021403244014.

It is not an unprimeable number, because it can be changed into a prime (40021403244443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7927980 + ... + 11953897.

It is an arithmetic number, because the mean of its divisors is an integer number (1854362879182).

Almost surely, 2^{40021403244043} is an apocalyptic number.

40021403244043 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

40021403244043 is a deficient number, since it is larger than the sum of its proper divisors (4483305856325).

40021403244043 is a wasteful number, since it uses less digits than its factorization.

40021403244043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19882223 (or 19882210 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 40021403244043 its reverse (34044230412004), we get a palindrome (74065633656047).

The spelling of 40021403244043 in words is "forty trillion, twenty-one billion, four hundred three million, two hundred forty-four thousand, forty-three".