823879854319 has 2 divisors, whose sum is σ = 823879854320. Its totient is φ = 823879854318.

The previous prime is 823879854271. The next prime is 823879854349. The reversal of 823879854319 is 913458978328.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 823879854319 - 2²⁷ = 823745636591 is a prime.

It is a super-2 number, since 2×823879854319² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (823879854349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411939927159 + 411939927160.

It is an arithmetic number, because the mean of its divisors is an integer number (411939927160).

Almost surely, 2^823879854319 is an apocalyptic number.

823879854319 is a deficient number, since it is larger than the sum of its proper divisors (1).

823879854319 is an equidigital number, since it uses as much as digits as its factorization.

823879854319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104509440, while the sum is 67.

The spelling of 823879854319 in words is "eight hundred twenty-three billion, eight hundred seventy-nine million, eight hundred fifty-four thousand, three hundred nineteen".