863952956563 has 2 divisors, whose sum is σ = 863952956564. Its totient is φ = 863952956562.

The previous prime is 863952956557. The next prime is 863952956639. The reversal of 863952956563 is 365659259368.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-863952956563 is a prime.

It is a super-2 number, since 2×863952956563² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (863952957563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431976478281 + 431976478282.

It is an arithmetic number, because the mean of its divisors is an integer number (431976478282).

Almost surely, 2^863952956563 is an apocalyptic number.

863952956563 is a deficient number, since it is larger than the sum of its proper divisors (1).

863952956563 is an equidigital number, since it uses as much as digits as its factorization.

863952956563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928000, while the sum is 67.

The spelling of 863952956563 in words is "eight hundred sixty-three billion, nine hundred fifty-two million, nine hundred fifty-six thousand, five hundred sixty-three".