426048927509 has 2 divisors, whose sum is σ = 426048927510. Its totient is φ = 426048927508.

The previous prime is 426048927503. The next prime is 426048927529. The reversal of 426048927509 is 905729840624.

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., 410554155025 + 15494772484 = 640745^2 + 124478^2 .

It is a cyclic number.

It is not a de Polignac number, because 426048927509 - 2²⁴ = 426032150293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426048927503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213024463754 + 213024463755.

It is an arithmetic number, because the mean of its divisors is an integer number (213024463755).

Almost surely, 2^426048927509 is an apocalyptic number.

It is an amenable number.

426048927509 is a deficient number, since it is larger than the sum of its proper divisors (1).

426048927509 is an equidigital number, since it uses as much as digits as its factorization.

426048927509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 426048927509 in words is "four hundred twenty-six billion, forty-eight million, nine hundred twenty-seven thousand, five hundred nine".