40503940823 has 4 divisors (see below), whose sum is σ = 40591802328. Its totient is φ = 40416079320.

The previous prime is 40503940759. The next prime is 40503940831. The reversal of 40503940823 is 32804930504.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40503940823 - 2⁶ = 40503940759 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 (40503940123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43930061 + ... + 43930982.

It is an arithmetic number, because the mean of its divisors is an integer number (10147950582).

Almost surely, 2^40503940823 is an apocalyptic number.

40503940823 is a deficient number, since it is larger than the sum of its proper divisors (87861505).

40503940823 is an equidigital number, since it uses as much as digits as its factorization.

40503940823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87861504.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 40503940823 in words is "forty billion, five hundred three million, nine hundred forty thousand, eight hundred twenty-three".