561672838895 has 8 divisors (see below), whose sum is σ = 770294179104. Its totient is φ = 385147089504.

The previous prime is 561672838891. The next prime is 561672838901. The reversal of 561672838895 is 598838276165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 561672838895 - 2² = 561672838891 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561672838891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8023897664 + ... + 8023897733.

It is an arithmetic number, because the mean of its divisors is an integer number (96286772388).

Almost surely, 2^561672838895 is an apocalyptic number.

561672838895 is a deficient number, since it is larger than the sum of its proper divisors (208621340209).

561672838895 is a wasteful number, since it uses less digits than its factorization.

561672838895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16047795409.

The product of its digits is 174182400, while the sum is 68.

The spelling of 561672838895 in words is "five hundred sixty-one billion, six hundred seventy-two million, eight hundred thirty-eight thousand, eight hundred ninety-five".