55516889212 has 12 divisors (see below), whose sum is σ = 97156890936. Its totient is φ = 27757777520.

The previous prime is 55516889167. The next prime is 55516889213. The reversal of 55516889212 is 21298861555.

It is a self number, because there is not a number n which added to its sum of digits gives 55516889212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55516889213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52518 + ... + 337330.

It is an arithmetic number, because the mean of its divisors is an integer number (8096407578).

Almost surely, 2^55516889212 is an apocalyptic number.

It is an amenable number.

55516889212 is a deficient number, since it is larger than the sum of its proper divisors (41640001724).

55516889212 is a wasteful number, since it uses less digits than its factorization.

55516889212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333548 (or 333546 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 52.

The spelling of 55516889212 in words is "fifty-five billion, five hundred sixteen million, eight hundred eighty-nine thousand, two hundred twelve".