56561161610 has 16 divisors (see below), whose sum is σ = 101813090400. Its totient is φ = 22623798096.

The previous prime is 56561161571. The next prime is 56561161627. The reversal of 56561161610 is 1616116565.

It is an unprimeable number.

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, 415001 + ... + 534179.

It is an arithmetic number, because the mean of its divisors is an integer number (6363318150).

Almost surely, 2^56561161610 is an apocalyptic number.

56561161610 is a deficient number, since it is larger than the sum of its proper divisors (45251928790).

56561161610 is a wasteful number, since it uses less digits than its factorization.

56561161610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166645.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 56561161610 in words is "fifty-six billion, five hundred sixty-one million, one hundred sixty-one thousand, six hundred ten".