561678338886 has 16 divisors (see below), whose sum is σ = 1283836203264. Its totient is φ = 160479525384.

The previous prime is 561678338873. The next prime is 561678338899. The reversal of 561678338886 is 688833876165.

It is an interprime number because it is at equal distance from previous prime (561678338873) and next prime (561678338899).

It is a self number, because there is not a number n which added to its sum of digits gives 561678338886.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6686646850 + ... + 6686646933.

It is an arithmetic number, because the mean of its divisors is an integer number (80239762704).

Almost surely, 2^561678338886 is an apocalyptic number.

561678338886 is an abundant number, since it is smaller than the sum of its proper divisors (722157864378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561678338886 is a wasteful number, since it uses less digits than its factorization.

561678338886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13373293795.

The product of its digits is 278691840, while the sum is 69.

The spelling of 561678338886 in words is "five hundred sixty-one billion, six hundred seventy-eight million, three hundred thirty-eight thousand, eight hundred eighty-six".