23421563419 has 2 divisors, whose sum is σ = 23421563420. Its totient is φ = 23421563418.

The previous prime is 23421563411. The next prime is 23421563471. The reversal of 23421563419 is 91436512432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23421563419 - 2³ = 23421563411 is a prime.

It is a super-2 number, since 2×23421563419² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23421563411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710781709 + 11710781710.

It is an arithmetic number, because the mean of its divisors is an integer number (11710781710).

Almost surely, 2^23421563419 is an apocalyptic number.

23421563419 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421563419 is an equidigital number, since it uses as much as digits as its factorization.

23421563419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The spelling of 23421563419 in words is "twenty-three billion, four hundred twenty-one million, five hundred sixty-three thousand, four hundred nineteen".