12351993553219 has 2 divisors, whose sum is σ = 12351993553220. Its totient is φ = 12351993553218.

The previous prime is 12351993553217. The next prime is 12351993553223. The reversal of 12351993553219 is 91235539915321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12351993553219 - 2¹ = 12351993553217 is a prime.

It is a super-2 number, since 2×12351993553219² (a number of 27 digits) contains 22 as substring.

Together with 12351993553217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12351993553217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6175996776609 + 6175996776610.

It is an arithmetic number, because the mean of its divisors is an integer number (6175996776610).

Almost surely, 2^{12351993553219} is an apocalyptic number.

12351993553219 is a deficient number, since it is larger than the sum of its proper divisors (1).

12351993553219 is an equidigital number, since it uses as much as digits as its factorization.

12351993553219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9841500, while the sum is 58.

The spelling of 12351993553219 in words is "twelve trillion, three hundred fifty-one billion, nine hundred ninety-three million, five hundred fifty-three thousand, two hundred nineteen".