523905820093 has 2 divisors, whose sum is σ = 523905820094. Its totient is φ = 523905820092.

The previous prime is 523905820063. The next prime is 523905820147. The reversal of 523905820093 is 390028509325.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427869049689 + 96036770404 = 654117^2 + 309898^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523905820093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523905820063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261952910046 + 261952910047.

It is an arithmetic number, because the mean of its divisors is an integer number (261952910047).

Almost surely, 2^523905820093 is an apocalyptic number.

It is an amenable number.

523905820093 is a deficient number, since it is larger than the sum of its proper divisors (1).

523905820093 is an equidigital number, since it uses as much as digits as its factorization.

523905820093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 523905820093 in words is "five hundred twenty-three billion, nine hundred five million, eight hundred twenty thousand, ninety-three".