363703525681 has 2 divisors, whose sum is σ = 363703525682. Its totient is φ = 363703525680.

The previous prime is 363703525657. The next prime is 363703525693. The reversal of 363703525681 is 186525307363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354471390625 + 9232135056 = 595375^2 + 96084^2 .

It is a cyclic number.

It is not a de Polignac number, because 363703525681 - 2²³ = 363695137073 is a prime.

It is a super-2 number, since 2×363703525681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (363703529681) 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, 181851762840 + 181851762841.

It is an arithmetic number, because the mean of its divisors is an integer number (181851762841).

Almost surely, 2^363703525681 is an apocalyptic number.

It is an amenable number.

363703525681 is a deficient number, since it is larger than the sum of its proper divisors (1).

363703525681 is an equidigital number, since it uses as much as digits as its factorization.

363703525681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 49.

The spelling of 363703525681 in words is "three hundred sixty-three billion, seven hundred three million, five hundred twenty-five thousand, six hundred eighty-one".