815006402433437 has 2 divisors, whose sum is σ = 815006402433438. Its totient is φ = 815006402433436.

The previous prime is 815006402433407. The next prime is 815006402433439. The reversal of 815006402433437 is 734334204600518.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 795597672608281 + 19408729825156 = 28206341^2 + 4405534^2 .

It is a cyclic number.

It is not a de Polignac number, because 815006402433437 - 2⁴⁶ = 744637658255773 is a prime.

Together with 815006402433439, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (815006402433439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407503201216718 + 407503201216719.

It is an arithmetic number, because the mean of its divisors is an integer number (407503201216719).

Almost surely, 2^{815006402433437} is an apocalyptic number.

It is an amenable number.

815006402433437 is a deficient number, since it is larger than the sum of its proper divisors (1).

815006402433437 is an equidigital number, since it uses as much as digits as its factorization.

815006402433437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 50.

The spelling of 815006402433437 in words is "eight hundred fifteen trillion, six billion, four hundred two million, four hundred thirty-three thousand, four hundred thirty-seven".