355388672257 has 2 divisors, whose sum is σ = 355388672258. Its totient is φ = 355388672256.

The previous prime is 355388672239. The next prime is 355388672341. The reversal of 355388672257 is 752276883553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239581859841 + 115806812416 = 489471^2 + 340304^2 .

It is a cyclic number.

It is not a de Polignac number, because 355388672257 - 2⁷ = 355388672129 is a prime.

It is a super-2 number, since 2×355388672257² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 355388672195 and 355388672204.

It is not a weakly prime, because it can be changed into another prime (355388672057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177694336128 + 177694336129.

It is an arithmetic number, because the mean of its divisors is an integer number (177694336129).

Almost surely, 2^355388672257 is an apocalyptic number.

It is an amenable number.

355388672257 is a deficient number, since it is larger than the sum of its proper divisors (1).

355388672257 is an equidigital number, since it uses as much as digits as its factorization.

355388672257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672000, while the sum is 61.

The spelling of 355388672257 in words is "three hundred fifty-five billion, three hundred eighty-eight million, six hundred seventy-two thousand, two hundred fifty-seven".