434205623165653 has 2 divisors, whose sum is σ = 434205623165654. Its totient is φ = 434205623165652.

The previous prime is 434205623165651. The next prime is 434205623165689. The reversal of 434205623165653 is 356561326502434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347782142570724 + 86423480594929 = 18648918^2 + 9296423^2 .

It is a cyclic number.

It is not a de Polignac number, because 434205623165653 - 2¹ = 434205623165651 is a prime.

It is a super-2 number, since 2×434205623165653² (a number of 30 digits) contains 22 as substring.

Together with 434205623165651, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 434205623165594 and 434205623165603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434205623165651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217102811582826 + 217102811582827.

It is an arithmetic number, because the mean of its divisors is an integer number (217102811582827).

Almost surely, 2^{434205623165653} is an apocalyptic number.

It is an amenable number.

434205623165653 is a deficient number, since it is larger than the sum of its proper divisors (1).

434205623165653 is an equidigital number, since it uses as much as digits as its factorization.

434205623165653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656000, while the sum is 55.

The spelling of 434205623165653 in words is "four hundred thirty-four trillion, two hundred five billion, six hundred twenty-three million, one hundred sixty-five thousand, six hundred fifty-three".