20645013119 has 2 divisors, whose sum is σ = 20645013120. Its totient is φ = 20645013118.

The previous prime is 20645013101. The next prime is 20645013133. The reversal of 20645013119 is 91131054602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20645013119 - 2²⁰ = 20643964543 is a prime.

It is a super-2 number, since 2×20645013119² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20645013149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10322506559 + 10322506560.

It is an arithmetic number, because the mean of its divisors is an integer number (10322506560).

Almost surely, 2^20645013119 is an apocalyptic number.

20645013119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20645013119 is an equidigital number, since it uses as much as digits as its factorization.

20645013119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 20645013119 in words is "twenty billion, six hundred forty-five million, thirteen thousand, one hundred nineteen".