246434572257661 has 2 divisors, whose sum is σ = 246434572257662. Its totient is φ = 246434572257660.

The previous prime is 246434572257659. The next prime is 246434572257691. The reversal of 246434572257661 is 166752275434642.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177524152744761 + 68910419512900 = 13323819^2 + 8301230^2 .

It is a cyclic number.

It is not a de Polignac number, because 246434572257661 - 2¹ = 246434572257659 is a prime.

Together with 246434572257659, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 246434572257593 and 246434572257602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (246434572257691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123217286128830 + 123217286128831.

It is an arithmetic number, because the mean of its divisors is an integer number (123217286128831).

Almost surely, 2^{246434572257661} is an apocalyptic number.

It is an amenable number.

246434572257661 is a deficient number, since it is larger than the sum of its proper divisors (1).

246434572257661 is an equidigital number, since it uses as much as digits as its factorization.

246434572257661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 406425600, while the sum is 64.

The spelling of 246434572257661 in words is "two hundred forty-six trillion, four hundred thirty-four billion, five hundred seventy-two million, two hundred fifty-seven thousand, six hundred sixty-one".