426404666431433 has 2 divisors, whose sum is σ = 426404666431434. Its totient is φ = 426404666431432.

The previous prime is 426404666431423. The next prime is 426404666431517. The reversal of 426404666431433 is 334134666404624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411016910696704 + 15387755734729 = 20273552^2 + 3922723^2 .

It is a cyclic number.

It is not a de Polignac number, because 426404666431433 - 2⁴² = 422006619920329 is a prime.

It is not a weakly prime, because it can be changed into another prime (426404666431423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213202333215716 + 213202333215717.

It is an arithmetic number, because the mean of its divisors is an integer number (213202333215717).

Almost surely, 2^{426404666431433} is an apocalyptic number.

It is an amenable number.

426404666431433 is a deficient number, since it is larger than the sum of its proper divisors (1).

426404666431433 is an equidigital number, since it uses as much as digits as its factorization.

426404666431433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71663616, while the sum is 56.

The spelling of 426404666431433 in words is "four hundred twenty-six trillion, four hundred four billion, six hundred sixty-six million, four hundred thirty-one thousand, four hundred thirty-three".