426833840261 has 2 divisors, whose sum is σ = 426833840262. Its totient is φ = 426833840260.

The previous prime is 426833840231. The next prime is 426833840263. The reversal of 426833840261 is 162048338624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 410873308036 + 15960532225 = 640994^2 + 126335^2 .

It is a cyclic number.

It is not a de Polignac number, because 426833840261 - 2³⁰ = 425760098437 is a prime.

Together with 426833840263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426833840263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213416920130 + 213416920131.

It is an arithmetic number, because the mean of its divisors is an integer number (213416920131).

Almost surely, 2^426833840261 is an apocalyptic number.

It is an amenable number.

426833840261 is a deficient number, since it is larger than the sum of its proper divisors (1).

426833840261 is an equidigital number, since it uses as much as digits as its factorization.

426833840261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1327104, while the sum is 47.

The spelling of 426833840261 in words is "four hundred twenty-six billion, eight hundred thirty-three million, eight hundred forty thousand, two hundred sixty-one".