55899873012 has 48 divisors (see below), whose sum is σ = 135115424640. Its totient is φ = 17966137728.

The previous prime is 55899872971. The next prime is 55899873031. The reversal of 55899873012 is 21037899855.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 145513 + ... + 364655.

It is an arithmetic number, because the mean of its divisors is an integer number (2814904680).

Almost surely, 2^55899873012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55899873012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67557712320).

55899873012 is an abundant number, since it is smaller than the sum of its proper divisors (79215551628).

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

55899873012 is a wasteful number, since it uses less digits than its factorization.

55899873012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219912 (or 219910 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 57.

The spelling of 55899873012 in words is "fifty-five billion, eight hundred ninety-nine million, eight hundred seventy-three thousand, twelve".