863230778447 has 2 divisors, whose sum is σ = 863230778448. Its totient is φ = 863230778446.

The previous prime is 863230778407. The next prime is 863230778489. The reversal of 863230778447 is 744877032368.

It is a happy number.

863230778447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 863230778447 - 2¹⁸ = 863230516303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863230778407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431615389223 + 431615389224.

It is an arithmetic number, because the mean of its divisors is an integer number (431615389224).

Almost surely, 2^863230778447 is an apocalyptic number.

863230778447 is a deficient number, since it is larger than the sum of its proper divisors (1).

863230778447 is an equidigital number, since it uses as much as digits as its factorization.

863230778447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37933056, while the sum is 59.

The spelling of 863230778447 in words is "eight hundred sixty-three billion, two hundred thirty million, seven hundred seventy-eight thousand, four hundred forty-seven".