20402003342013 has 4 divisors (see below), whose sum is σ = 27202671122688. Its totient is φ = 13601335561340.

The previous prime is 20402003342011. The next prime is 20402003342059. The reversal of 20402003342013 is 31024330020402.

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 20402003342013 - 2¹ = 20402003342011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402003342011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3400333890333 + ... + 3400333890338.

It is an arithmetic number, because the mean of its divisors is an integer number (6800667780672).

Almost surely, 2^{20402003342013} is an apocalyptic number.

It is an amenable number.

20402003342013 is a deficient number, since it is larger than the sum of its proper divisors (6800667780675).

20402003342013 is an equidigital number, since it uses as much as digits as its factorization.

20402003342013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6800667780674.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20402003342013 its reverse (31024330020402), we get a palindrome (51426333362415).

The spelling of 20402003342013 in words is "twenty trillion, four hundred two billion, three million, three hundred forty-two thousand, thirteen".