55561049846 has 4 divisors (see below), whose sum is σ = 83341574772. Its totient is φ = 27780524922.

The previous prime is 55561049813. The next prime is 55561049849. The reversal of 55561049846 is 64894016555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64894016555 = 5 ⋅12978803311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55561049849) 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 as a sum of consecutive naturals, namely, 13890262460 + ... + 13890262463.

It is an arithmetic number, because the mean of its divisors is an integer number (20835393693).

Almost surely, 2^55561049846 is an apocalyptic number.

55561049846 is a deficient number, since it is larger than the sum of its proper divisors (27780524926).

55561049846 is a wasteful number, since it uses less digits than its factorization.

55561049846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27780524925.

The product of its (nonzero) digits is 5184000, while the sum is 53.

The spelling of 55561049846 in words is "fifty-five billion, five hundred sixty-one million, forty-nine thousand, eight hundred forty-six".