363687618641 has 2 divisors, whose sum is σ = 363687618642. Its totient is φ = 363687618640.

The previous prime is 363687618617. The next prime is 363687618659. The reversal of 363687618641 is 146816786363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 275944292416 + 87743326225 = 525304^2 + 296215^2 .

It is a cyclic number.

It is not a de Polignac number, because 363687618641 - 2⁶ = 363687618577 is a prime.

It is a super-2 number, since 2×363687618641² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (363687618601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181843809320 + 181843809321.

It is an arithmetic number, because the mean of its divisors is an integer number (181843809321).

Almost surely, 2^363687618641 is an apocalyptic number.

It is an amenable number.

363687618641 is a deficient number, since it is larger than the sum of its proper divisors (1).

363687618641 is an equidigital number, since it uses as much as digits as its factorization.

363687618641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20901888, while the sum is 59.

The spelling of 363687618641 in words is "three hundred sixty-three billion, six hundred eighty-seven million, six hundred eighteen thousand, six hundred forty-one".