363728781329 has 2 divisors, whose sum is σ = 363728781330. Its totient is φ = 363728781328.

The previous prime is 363728781307. The next prime is 363728781337. The reversal of 363728781329 is 923187827363.

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., 356241859600 + 7486921729 = 596860^2 + 86527^2 .

It is a cyclic number.

It is not a de Polignac number, because 363728781329 - 2²⁸ = 363460345873 is a prime.

It is not a weakly prime, because it can be changed into another prime (363728781529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181864390664 + 181864390665.

It is an arithmetic number, because the mean of its divisors is an integer number (181864390665).

Almost surely, 2^363728781329 is an apocalyptic number.

It is an amenable number.

363728781329 is a deficient number, since it is larger than the sum of its proper divisors (1).

363728781329 is an equidigital number, since it uses as much as digits as its factorization.

363728781329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18289152, while the sum is 59.

The spelling of 363728781329 in words is "three hundred sixty-three billion, seven hundred twenty-eight million, seven hundred eighty-one thousand, three hundred twenty-nine".