8400105561 has 8 divisors (see below), whose sum is σ = 11789621920. Its totient is φ = 5305329792.

The previous prime is 8400105551. The next prime is 8400105587. The reversal of 8400105561 is 1655010048.

8400105561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8400105561 - 2⁵ = 8400105529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8400105551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73685080 + ... + 73685193.

It is an arithmetic number, because the mean of its divisors is an integer number (1473702740).

Almost surely, 2^8400105561 is an apocalyptic number.

It is an amenable number.

8400105561 is a deficient number, since it is larger than the sum of its proper divisors (3389516359).

8400105561 is a wasteful number, since it uses less digits than its factorization.

8400105561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147370295.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 8400105561 is about 91652.0897797753. The cubic root of 8400105561 is about 2032.8012288175.

The spelling of 8400105561 in words is "eight billion, four hundred million, one hundred five thousand, five hundred sixty-one".