426614321657 has 2 divisors, whose sum is σ = 426614321658. Its totient is φ = 426614321656.

The previous prime is 426614321647. The next prime is 426614321663. The reversal of 426614321657 is 756123416624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 412910341561 + 13703980096 = 642581^2 + 117064^2 .

It is a cyclic number.

It is not a de Polignac number, because 426614321657 - 2¹⁶ = 426614256121 is a prime.

It is not a weakly prime, because it can be changed into another prime (426614321647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213307160828 + 213307160829.

It is an arithmetic number, because the mean of its divisors is an integer number (213307160829).

Almost surely, 2^426614321657 is an apocalyptic number.

It is an amenable number.

426614321657 is a deficient number, since it is larger than the sum of its proper divisors (1).

426614321657 is an equidigital number, since it uses as much as digits as its factorization.

426614321657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 47.

The spelling of 426614321657 in words is "four hundred twenty-six billion, six hundred fourteen million, three hundred twenty-one thousand, six hundred fifty-seven".