12356533663453 has 6 divisors (see below), whose sum is σ = 14373926914686. Its totient is φ = 10591314568632.

The previous prime is 12356533663451. The next prime is 12356533663493. The reversal of 12356533663453 is 35436633565321.

It can be written as a sum of positive squares in only one way, i.e., 11908386427609 + 448147235844 = 3450853^2 + 669438^2 .

It is not a de Polignac number, because 12356533663453 - 2¹ = 12356533663451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12356533663394 and 12356533663403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12356533663451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126087078150 + ... + 126087078247.

It is an arithmetic number, because the mean of its divisors is an integer number (2395654485781).

Almost surely, 2^{12356533663453} is an apocalyptic number.

It is an amenable number.

12356533663453 is a deficient number, since it is larger than the sum of its proper divisors (2017393251233).

12356533663453 is an equidigital number, since it uses as much as digits as its factorization.

12356533663453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252174156411 (or 252174156404 counting only the distinct ones).

The product of its digits is 52488000, while the sum is 55.

The spelling of 12356533663453 in words is "twelve trillion, three hundred fifty-six billion, five hundred thirty-three million, six hundred sixty-three thousand, four hundred fifty-three".