23521435219 has 2 divisors, whose sum is σ = 23521435220. Its totient is φ = 23521435218.

The previous prime is 23521435213. The next prime is 23521435241. The reversal of 23521435219 is 91253412532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23521435219 - 2³ = 23521435211 is a prime.

It is a super-2 number, since 2×23521435219² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23521435211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11760717609 + 11760717610.

It is an arithmetic number, because the mean of its divisors is an integer number (11760717610).

Almost surely, 2^23521435219 is an apocalyptic number.

23521435219 is a deficient number, since it is larger than the sum of its proper divisors (1).

23521435219 is an equidigital number, since it uses as much as digits as its factorization.

23521435219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The spelling of 23521435219 in words is "twenty-three billion, five hundred twenty-one million, four hundred thirty-five thousand, two hundred nineteen".