1812336855503 has 2 divisors, whose sum is σ = 1812336855504. Its totient is φ = 1812336855502.

The previous prime is 1812336855463. The next prime is 1812336855551. The reversal of 1812336855503 is 3055586332181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1812336855503 - 2¹⁰ = 1812336854479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1812336855103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906168427751 + 906168427752.

It is an arithmetic number, because the mean of its divisors is an integer number (906168427752).

Almost surely, 2^{1812336855503} is an apocalyptic number.

1812336855503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1812336855503 is an equidigital number, since it uses as much as digits as its factorization.

1812336855503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592000, while the sum is 50.

The spelling of 1812336855503 in words is "one trillion, eight hundred twelve billion, three hundred thirty-six million, eight hundred fifty-five thousand, five hundred three".