19885512223 has 2 divisors, whose sum is σ = 19885512224. Its totient is φ = 19885512222.

The previous prime is 19885512209. The next prime is 19885512277. The reversal of 19885512223 is 32221558891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19885512223 - 2²⁹ = 19348641311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19885512923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9942756111 + 9942756112.

It is an arithmetic number, because the mean of its divisors is an integer number (9942756112).

Almost surely, 2^19885512223 is an apocalyptic number.

19885512223 is a deficient number, since it is larger than the sum of its proper divisors (1).

19885512223 is an equidigital number, since it uses as much as digits as its factorization.

19885512223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 46.

The spelling of 19885512223 in words is "nineteen billion, eight hundred eighty-five million, five hundred twelve thousand, two hundred twenty-three".