863121822413 has 4 divisors (see below), whose sum is σ = 863429753088. Its totient is φ = 862813891740.

The previous prime is 863121822401. The next prime is 863121822439. The reversal of 863121822413 is 314228121368.

863121822413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 863121822413 - 2⁴ = 863121822397 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 (863121822443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153961133 + ... + 153966738.

It is an arithmetic number, because the mean of its divisors is an integer number (215857438272).

Almost surely, 2^863121822413 is an apocalyptic number.

It is an amenable number.

863121822413 is a deficient number, since it is larger than the sum of its proper divisors (307930675).

863121822413 is a wasteful number, since it uses less digits than its factorization.

863121822413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307930674.

The product of its digits is 110592, while the sum is 41.

The spelling of 863121822413 in words is "eight hundred sixty-three billion, one hundred twenty-one million, eight hundred twenty-two thousand, four hundred thirteen".