12315894533 has 2 divisors, whose sum is σ = 12315894534. Its totient is φ = 12315894532.

The previous prime is 12315894509. The next prime is 12315894553. The reversal of 12315894533 is 33549851321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12315894529 + 4 = 110977^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 12315894533 - 2¹⁰ = 12315893509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12315894553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6157947266 + 6157947267.

It is an arithmetic number, because the mean of its divisors is an integer number (6157947267).

Almost surely, 2^12315894533 is an apocalyptic number.

It is an amenable number.

12315894533 is a deficient number, since it is larger than the sum of its proper divisors (1).

12315894533 is an equidigital number, since it uses as much as digits as its factorization.

12315894533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 44.

The spelling of 12315894533 in words is "twelve billion, three hundred fifteen million, eight hundred ninety-four thousand, five hundred thirty-three".