878023413349 has 4 divisors (see below), whose sum is σ = 878075877580. Its totient is φ = 877970949120.

The previous prime is 878023413307. The next prime is 878023413353. The reversal of 878023413349 is 943314320878.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 835657424449 + 42365988900 = 914143^2 + 205830^2 .

It is a cyclic number.

It is not a de Polignac number, because 878023413349 - 2²⁵ = 877989858917 is a prime.

It is a super-2 number, since 2×878023413349² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 878023413296 and 878023413305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878023413359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26207004 + ... + 26240485.

It is an arithmetic number, because the mean of its divisors is an integer number (219518969395).

Almost surely, 2^878023413349 is an apocalyptic number.

It is an amenable number.

878023413349 is a deficient number, since it is larger than the sum of its proper divisors (52464231).

878023413349 is a wasteful number, since it uses less digits than its factorization.

878023413349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52464230.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 878023413349 in words is "eight hundred seventy-eight billion, twenty-three million, four hundred thirteen thousand, three hundred forty-nine".