863230778477 has 8 divisors (see below), whose sum is σ = 874013955576. Its totient is φ = 852502758912.

The previous prime is 863230778447. The next prime is 863230778489. The reversal of 863230778477 is 774877032368.

863230778477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 34145865796 + 829084912681 = 184786^2 + 910541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 863230778477 - 2²⁸ = 862962343021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863230778407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13757888 + ... + 13820489.

It is an arithmetic number, because the mean of its divisors is an integer number (109251744447).

Almost surely, 2^863230778477 is an apocalyptic number.

It is an amenable number.

863230778477 is a deficient number, since it is larger than the sum of its proper divisors (10783177099).

863230778477 is a wasteful number, since it uses less digits than its factorization.

863230778477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27578767.

The product of its (nonzero) digits is 66382848, while the sum is 62.

The spelling of 863230778477 in words is "eight hundred sixty-three billion, two hundred thirty million, seven hundred seventy-eight thousand, four hundred seventy-seven".