40403042523503 has 24 divisors (see below), whose sum is σ = 46861507173600. Its totient is φ = 34738326529280.

The previous prime is 40403042523497. The next prime is 40403042523511. The reversal of 40403042523503 is 30532524030404.

It is a happy number.

It is not a de Polignac number, because 40403042523503 - 2¹² = 40403042519407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40403042523523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81312998 + ... + 81808371.

It is an arithmetic number, because the mean of its divisors is an integer number (1952562798900).

Almost surely, 2^{40403042523503} is an apocalyptic number.

40403042523503 is a deficient number, since it is larger than the sum of its proper divisors (6458464650097).

40403042523503 is a wasteful number, since it uses less digits than its factorization.

40403042523503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163121503 (or 163121492 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 35.

Adding to 40403042523503 its reverse (30532524030404), we get a palindrome (70935566553907).

The spelling of 40403042523503 in words is "forty trillion, four hundred three billion, forty-two million, five hundred twenty-three thousand, five hundred three".