426413444314661 has 2 divisors, whose sum is σ = 426413444314662. Its totient is φ = 426413444314660.

The previous prime is 426413444314499. The next prime is 426413444314681. The reversal of 426413444314661 is 166413444314624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342031032034561 + 84382412280100 = 18494081^2 + 9185990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426413444314661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426413444314681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213206722157330 + 213206722157331.

It is an arithmetic number, because the mean of its divisors is an integer number (213206722157331).

Almost surely, 2^{426413444314661} is an apocalyptic number.

It is an amenable number.

426413444314661 is a deficient number, since it is larger than the sum of its proper divisors (1).

426413444314661 is an equidigital number, since it uses as much as digits as its factorization.

426413444314661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15925248, while the sum is 53.

The spelling of 426413444314661 in words is "four hundred twenty-six trillion, four hundred thirteen billion, four hundred forty-four million, three hundred fourteen thousand, six hundred sixty-one".