363899299681 has 2 divisors, whose sum is σ = 363899299682. Its totient is φ = 363899299680.

The previous prime is 363899299657. The next prime is 363899299727. The reversal of 363899299681 is 186992998363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 363869542656 + 29757025 = 603216^2 + 5455^2 .

It is a cyclic number.

It is not a de Polignac number, because 363899299681 - 2¹¹ = 363899297633 is a prime.

It is a super-2 number, since 2×363899299681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (363899297681) 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, 181949649840 + 181949649841.

It is an arithmetic number, because the mean of its divisors is an integer number (181949649841).

Almost surely, 2^363899299681 is an apocalyptic number.

It is an amenable number.

363899299681 is a deficient number, since it is larger than the sum of its proper divisors (1).

363899299681 is an equidigital number, since it uses as much as digits as its factorization.

363899299681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272097792, while the sum is 73.

The spelling of 363899299681 in words is "three hundred sixty-three billion, eight hundred ninety-nine million, two hundred ninety-nine thousand, six hundred eighty-one".