335172504856661 has 2 divisors, whose sum is σ = 335172504856662. Its totient is φ = 335172504856660.

The previous prime is 335172504856643. The next prime is 335172504856663. The reversal of 335172504856661 is 166658405271533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234214099443025 + 100958405413636 = 15304055^2 + 10047806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-335172504856661 is a prime.

It is a super-2 number, since 2×335172504856661² (a number of 30 digits) contains 22 as substring.

Together with 335172504856663, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 335172504856594 and 335172504856603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (335172504856663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167586252428330 + 167586252428331.

It is an arithmetic number, because the mean of its divisors is an integer number (167586252428331).

Almost surely, 2^{335172504856661} is an apocalyptic number.

It is an amenable number.

335172504856661 is a deficient number, since it is larger than the sum of its proper divisors (1).

335172504856661 is an equidigital number, since it uses as much as digits as its factorization.

335172504856661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864000, while the sum is 62.

The spelling of 335172504856661 in words is "three hundred thirty-five trillion, one hundred seventy-two billion, five hundred four million, eight hundred fifty-six thousand, six hundred sixty-one".