523406443533461 has 2 divisors, whose sum is σ = 523406443533462. Its totient is φ = 523406443533460.

The previous prime is 523406443533451. The next prime is 523406443533487. The reversal of 523406443533461 is 164335344604325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299071022068900 + 224335421464561 = 17293670^2 + 14977831^2 .

It is a cyclic number.

It is not a de Polignac number, because 523406443533461 - 2²⁶ = 523406376424597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523406443533451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261703221766730 + 261703221766731.

It is an arithmetic number, because the mean of its divisors is an integer number (261703221766731).

Almost surely, 2^{523406443533461} is an apocalyptic number.

It is an amenable number.

523406443533461 is a deficient number, since it is larger than the sum of its proper divisors (1).

523406443533461 is an equidigital number, since it uses as much as digits as its factorization.

523406443533461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37324800, while the sum is 53.

The spelling of 523406443533461 in words is "five hundred twenty-three trillion, four hundred six billion, four hundred forty-three million, five hundred thirty-three thousand, four hundred sixty-one".