426523530557 has 2 divisors, whose sum is σ = 426523530558. Its totient is φ = 426523530556.

The previous prime is 426523530509. The next prime is 426523530571. The reversal of 426523530557 is 755035325624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325819489636 + 100704040921 = 570806^2 + 317339^2 .

It is a cyclic number.

It is not a de Polignac number, because 426523530557 - 2¹⁶ = 426523465021 is a prime.

It is a super-2 number, since 2×426523530557² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426523530457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213261765278 + 213261765279.

It is an arithmetic number, because the mean of its divisors is an integer number (213261765279).

Almost surely, 2^426523530557 is an apocalyptic number.

It is an amenable number.

426523530557 is a deficient number, since it is larger than the sum of its proper divisors (1).

426523530557 is an equidigital number, since it uses as much as digits as its factorization.

426523530557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780000, while the sum is 47.

The spelling of 426523530557 in words is "four hundred twenty-six billion, five hundred twenty-three million, five hundred thirty thousand, five hundred fifty-seven".