20867103919 has 2 divisors, whose sum is σ = 20867103920. Its totient is φ = 20867103918.

The previous prime is 20867103877. The next prime is 20867103967. The reversal of 20867103919 is 91930176802.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20867103919 - 2¹³ = 20867095727 is a prime.

It is a super-2 number, since 2×20867103919² (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 (20867103319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10433551959 + 10433551960.

It is an arithmetic number, because the mean of its divisors is an integer number (10433551960).

Almost surely, 2^20867103919 is an apocalyptic number.

20867103919 is a deficient number, since it is larger than the sum of its proper divisors (1).

20867103919 is an equidigital number, since it uses as much as digits as its factorization.

20867103919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 20867103919 in words is "twenty billion, eight hundred sixty-seven million, one hundred three thousand, nine hundred nineteen".