40505050013 has 4 divisors (see below), whose sum is σ = 42266139168. Its totient is φ = 38743960860.

The previous prime is 40505049953. The next prime is 40505050037. The reversal of 40505050013 is 31005050504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40505050013 - 2⁸ = 40505049757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1761089131 = 40505050013 / (4 + 0 + 5 + 0 + 5 + 0 + 5 + 0 + 0 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40505050063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880544543 + ... + 880544588.

It is an arithmetic number, because the mean of its divisors is an integer number (10566534792).

Almost surely, 2^40505050013 is an apocalyptic number.

It is an amenable number.

40505050013 is a deficient number, since it is larger than the sum of its proper divisors (1761089155).

40505050013 is a wasteful number, since it uses less digits than its factorization.

40505050013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761089154.

The product of its (nonzero) digits is 1500, while the sum is 23.

The spelling of 40505050013 in words is "forty billion, five hundred five million, fifty thousand, thirteen".