20013721041319 has 2 divisors, whose sum is σ = 20013721041320. Its totient is φ = 20013721041318.

The previous prime is 20013721041317. The next prime is 20013721041341. The reversal of 20013721041319 is 91314012731002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20013721041319 - 2¹ = 20013721041317 is a prime.

It is a super-2 number, since 2×20013721041319² (a number of 27 digits) contains 22 as substring.

Together with 20013721041317, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20013721041317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006860520659 + 10006860520660.

It is an arithmetic number, because the mean of its divisors is an integer number (10006860520660).

Almost surely, 2^{20013721041319} is an apocalyptic number.

20013721041319 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013721041319 is an equidigital number, since it uses as much as digits as its factorization.

20013721041319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 20013721041319 in words is "twenty trillion, thirteen billion, seven hundred twenty-one million, forty-one thousand, three hundred nineteen".