879644142261 has 24 divisors (see below), whose sum is σ = 1355792160320. Its totient is φ = 547954238016.

The previous prime is 879644142227. The next prime is 879644142271. The reversal of 879644142261 is 162241446978.

879644142261 is a `hidden beast` number, since 87 + 96 + 4 + 414 + 2 + 2 + 61 = 666.

It is not a de Polignac number, because 879644142261 - 2¹⁰ = 879644141237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 879644142198 and 879644142207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879644142271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35221201 + ... + 35246166.

Almost surely, 2^879644142261 is an apocalyptic number.

It is an amenable number.

879644142261 is a deficient number, since it is larger than the sum of its proper divisors (476148018059).

879644142261 is a wasteful number, since it uses less digits than its factorization.

879644142261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70467465 (or 70467462 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 879644142261 in words is "eight hundred seventy-nine billion, six hundred forty-four million, one hundred forty-two thousand, two hundred sixty-one".