339851729681 has 2 divisors, whose sum is σ = 339851729682. Its totient is φ = 339851729680.

The previous prime is 339851729653. The next prime is 339851729683. The reversal of 339851729681 is 186927158933.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221779774225 + 118071955456 = 470935^2 + 343616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-339851729681 is a prime.

It is a super-2 number, since 2×339851729681² (a number of 24 digits) contains 22 as substring.

Together with 339851729683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (339851729683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169925864840 + 169925864841.

It is an arithmetic number, because the mean of its divisors is an integer number (169925864841).

Almost surely, 2^339851729681 is an apocalyptic number.

It is an amenable number.

339851729681 is a deficient number, since it is larger than the sum of its proper divisors (1).

339851729681 is an equidigital number, since it uses as much as digits as its factorization.

339851729681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19595520, while the sum is 62.

The spelling of 339851729681 in words is "three hundred thirty-nine billion, eight hundred fifty-one million, seven hundred twenty-nine thousand, six hundred eighty-one".