873564410879 has 4 divisors (see below), whose sum is σ = 873667592184. Its totient is φ = 873461229576.

The previous prime is 873564410861. The next prime is 873564410897. The reversal of 873564410879 is 978014465378.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978014465378 = 2 ⋅489007232689.

It is an interprime number because it is at equal distance from previous prime (873564410861) and next prime (873564410897).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-873564410879 is a prime.

It is a super-2 number, since 2×873564410879² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (873564410179) 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, 51577952 + ... + 51594885.

It is an arithmetic number, because the mean of its divisors is an integer number (218416898046).

Almost surely, 2^873564410879 is an apocalyptic number.

873564410879 is a deficient number, since it is larger than the sum of its proper divisors (103181305).

873564410879 is a wasteful number, since it uses less digits than its factorization.

873564410879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103181304.

The product of its (nonzero) digits is 40642560, while the sum is 62.

The spelling of 873564410879 in words is "eight hundred seventy-three billion, five hundred sixty-four million, four hundred ten thousand, eight hundred seventy-nine".