40013356503 has 4 divisors (see below), whose sum is σ = 53351142008. Its totient is φ = 26675571000.

The previous prime is 40013356499. The next prime is 40013356529. The reversal of 40013356503 is 30565331004.

It is a happy number.

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

It is not a de Polignac number, because 40013356503 - 2² = 40013356499 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 (40013306503) 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, 6668892748 + ... + 6668892753.

It is an arithmetic number, because the mean of its divisors is an integer number (13337785502).

Almost surely, 2^40013356503 is an apocalyptic number.

40013356503 is a deficient number, since it is larger than the sum of its proper divisors (13337785505).

40013356503 is a wasteful number, since it uses less digits than its factorization.

40013356503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13337785504.

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 40013356503 its reverse (30565331004), we get a palindrome (70578687507).

The spelling of 40013356503 in words is "forty billion, thirteen million, three hundred fifty-six thousand, five hundred three".