521457113311 has 2 divisors, whose sum is σ = 521457113312. Its totient is φ = 521457113310.

The previous prime is 521457113251. The next prime is 521457113329. The reversal of 521457113311 is 113311754125.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 521457113311 - 2⁷ = 521457113183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521457113911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260728556655 + 260728556656.

It is an arithmetic number, because the mean of its divisors is an integer number (260728556656).

Almost surely, 2^521457113311 is an apocalyptic number.

521457113311 is a deficient number, since it is larger than the sum of its proper divisors (1).

521457113311 is an equidigital number, since it uses as much as digits as its factorization.

521457113311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 34.

Adding to 521457113311 its reverse (113311754125), we get a palindrome (634768867436).

The spelling of 521457113311 in words is "five hundred twenty-one billion, four hundred fifty-seven million, one hundred thirteen thousand, three hundred eleven".