879221831361 has 4 divisors (see below), whose sum is σ = 1172295775152. Its totient is φ = 586147887572.

The previous prime is 879221831359. The next prime is 879221831377. The reversal of 879221831361 is 163138122978.

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 879221831361 - 2¹ = 879221831359 is a prime.

It is a super-2 number, since 2×879221831361² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (879221831311) 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, 146536971891 + ... + 146536971896.

It is an arithmetic number, because the mean of its divisors is an integer number (293073943788).

Almost surely, 2^879221831361 is an apocalyptic number.

It is an amenable number.

879221831361 is a deficient number, since it is larger than the sum of its proper divisors (293073943791).

879221831361 is a wasteful number, since it uses less digits than its factorization.

879221831361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293073943790.

The product of its digits is 870912, while the sum is 51.

The spelling of 879221831361 in words is "eight hundred seventy-nine billion, two hundred twenty-one million, eight hundred thirty-one thousand, three hundred sixty-one".