6461887523863 has 2 divisors, whose sum is σ = 6461887523864. Its totient is φ = 6461887523862.

The previous prime is 6461887523831. The next prime is 6461887523891. The reversal of 6461887523863 is 3683257881646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6461887523863 - 2⁵ = 6461887523831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6461887523803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230943761931 + 3230943761932.

It is an arithmetic number, because the mean of its divisors is an integer number (3230943761932).

Almost surely, 2^{6461887523863} is an apocalyptic number.

6461887523863 is a deficient number, since it is larger than the sum of its proper divisors (1).

6461887523863 is an equidigital number, since it uses as much as digits as its factorization.

6461887523863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 278691840, while the sum is 67.

The spelling of 6461887523863 in words is "six trillion, four hundred sixty-one billion, eight hundred eighty-seven million, five hundred twenty-three thousand, eight hundred sixty-three".