426661016165453 has 2 divisors, whose sum is σ = 426661016165454. Its totient is φ = 426661016165452.

The previous prime is 426661016165347. The next prime is 426661016165459. The reversal of 426661016165453 is 354561610166624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417009195164809 + 9651821000644 = 20420803^2 + 3106738^2 .

It is a cyclic number.

It is not a de Polignac number, because 426661016165453 - 2²² = 426661011971149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426661016165459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213330508082726 + 213330508082727.

It is an arithmetic number, because the mean of its divisors is an integer number (213330508082727).

Almost surely, 2^{426661016165453} is an apocalyptic number.

It is an amenable number.

426661016165453 is a deficient number, since it is larger than the sum of its proper divisors (1).

426661016165453 is an equidigital number, since it uses as much as digits as its factorization.

426661016165453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18662400, while the sum is 56.

The spelling of 426661016165453 in words is "four hundred twenty-six trillion, six hundred sixty-one billion, sixteen million, one hundred sixty-five thousand, four hundred fifty-three".