4663887955121 has 2 divisors, whose sum is σ = 4663887955122. Its totient is φ = 4663887955120.

The previous prime is 4663887955039. The next prime is 4663887955141. The reversal of 4663887955121 is 1215597883664.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3844093524496 + 819794430625 = 1960636^2 + 905425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4663887955121 is a prime.

It is not a weakly prime, because it can be changed into another prime (4663887955141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2331943977560 + 2331943977561.

It is an arithmetic number, because the mean of its divisors is an integer number (2331943977561).

Almost surely, 2^{4663887955121} is an apocalyptic number.

It is an amenable number.

4663887955121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4663887955121 is an equidigital number, since it uses as much as digits as its factorization.

4663887955121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87091200, while the sum is 65.

The spelling of 4663887955121 in words is "four trillion, six hundred sixty-three billion, eight hundred eighty-seven million, nine hundred fifty-five thousand, one hundred twenty-one".