863870651473 has 2 divisors, whose sum is σ = 863870651474. Its totient is φ = 863870651472.

The previous prime is 863870651431. The next prime is 863870651513. The reversal of 863870651473 is 374156078368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 863622651969 + 247999504 = 929313^2 + 15748^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-863870651473 is a prime.

It is not a weakly prime, because it can be changed into another prime (863870652473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431935325736 + 431935325737.

It is an arithmetic number, because the mean of its divisors is an integer number (431935325737).

Almost surely, 2^863870651473 is an apocalyptic number.

It is an amenable number.

863870651473 is a deficient number, since it is larger than the sum of its proper divisors (1).

863870651473 is an equidigital number, since it uses as much as digits as its factorization.

863870651473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 863870651473 in words is "eight hundred sixty-three billion, eight hundred seventy million, six hundred fifty-one thousand, four hundred seventy-three".