523304500091 has 2 divisors, whose sum is σ = 523304500092. Its totient is φ = 523304500090.

The previous prime is 523304500063. The next prime is 523304500093. The reversal of 523304500091 is 190005403325.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523304500091 is a prime.

Together with 523304500093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (523304500093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261652250045 + 261652250046.

It is an arithmetic number, because the mean of its divisors is an integer number (261652250046).

Almost surely, 2^523304500091 is an apocalyptic number.

523304500091 is a deficient number, since it is larger than the sum of its proper divisors (1).

523304500091 is an equidigital number, since it uses as much as digits as its factorization.

523304500091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 523304500091 in words is "five hundred twenty-three billion, three hundred four million, five hundred thousand, ninety-one".