363728781457 has 2 divisors, whose sum is σ = 363728781458. Its totient is φ = 363728781456.

The previous prime is 363728781439. The next prime is 363728781511. The reversal of 363728781457 is 754187827363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227265772176 + 136463009281 = 476724^2 + 369409^2 .

It is a cyclic number.

It is not a de Polignac number, because 363728781457 - 2⁷ = 363728781329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 363728781395 and 363728781404.

It is not a weakly prime, because it can be changed into another prime (363728781557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181864390728 + 181864390729.

It is an arithmetic number, because the mean of its divisors is an integer number (181864390729).

Almost surely, 2^363728781457 is an apocalyptic number.

It is an amenable number.

363728781457 is a deficient number, since it is larger than the sum of its proper divisors (1).

363728781457 is an equidigital number, since it uses as much as digits as its factorization.

363728781457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47416320, while the sum is 61.

The spelling of 363728781457 in words is "three hundred sixty-three billion, seven hundred twenty-eight million, seven hundred eighty-one thousand, four hundred fifty-seven".