20013043619 has 2 divisors, whose sum is σ = 20013043620. Its totient is φ = 20013043618.

The previous prime is 20013043591. The next prime is 20013043681. The reversal of 20013043619 is 91634031002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20013043619 is a prime.

It is a super-2 number, since 2×20013043619² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20013043591 and 20013043600.

It is not a weakly prime, because it can be changed into another prime (20013043019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006521809 + 10006521810.

It is an arithmetic number, because the mean of its divisors is an integer number (10006521810).

Almost surely, 2^20013043619 is an apocalyptic number.

20013043619 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013043619 is an equidigital number, since it uses as much as digits as its factorization.

20013043619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 20013043619 in words is "twenty billion, thirteen million, forty-three thousand, six hundred nineteen".