426261478117 has 2 divisors, whose sum is σ = 426261478118. Its totient is φ = 426261478116.

The previous prime is 426261478109. The next prime is 426261478157. The reversal of 426261478117 is 711874162624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314512342596 + 111749135521 = 560814^2 + 334289^2 .

It is a cyclic number.

It is not a de Polignac number, because 426261478117 - 2³ = 426261478109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426261478157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213130739058 + 213130739059.

It is an arithmetic number, because the mean of its divisors is an integer number (213130739059).

Almost surely, 2^426261478117 is an apocalyptic number.

It is an amenable number.

426261478117 is a deficient number, since it is larger than the sum of its proper divisors (1).

426261478117 is an equidigital number, since it uses as much as digits as its factorization.

426261478117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 49.

The spelling of 426261478117 in words is "four hundred twenty-six billion, two hundred sixty-one million, four hundred seventy-eight thousand, one hundred seventeen".