338853523661 has 2 divisors, whose sum is σ = 338853523662. Its totient is φ = 338853523660.

The previous prime is 338853523609. The next prime is 338853523663. The reversal of 338853523661 is 166325358833.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338805484900 + 48038761 = 582070^2 + 6931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338853523661 is a prime.

It is a super-2 number, since 2×338853523661² (a number of 24 digits) contains 22 as substring.

Together with 338853523663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (338853523663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169426761830 + 169426761831.

It is an arithmetic number, because the mean of its divisors is an integer number (169426761831).

Almost surely, 2^338853523661 is an apocalyptic number.

It is an amenable number.

338853523661 is a deficient number, since it is larger than the sum of its proper divisors (1).

338853523661 is an equidigital number, since it uses as much as digits as its factorization.

338853523661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9331200, while the sum is 53.

The spelling of 338853523661 in words is "three hundred thirty-eight billion, eight hundred fifty-three million, five hundred twenty-three thousand, six hundred sixty-one".