55005111012 has 96 divisors (see below), whose sum is σ = 131836723200. Its totient is φ = 17844607872.

The previous prime is 55005110981. The next prime is 55005111013. The reversal of 55005111012 is 21011150055.

It is a self number, because there is not a number n which added to its sum of digits gives 55005111012.

It is not an unprimeable number, because it can be changed into a prime (55005111013) 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 31 ways as a sum of consecutive naturals, for example, 23335738 + ... + 23338094.

It is an arithmetic number, because the mean of its divisors is an integer number (1373299200).

Almost surely, 2^55005111012 is an apocalyptic number.

It is an amenable number.

55005111012 is an abundant number, since it is smaller than the sum of its proper divisors (76831612188).

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

55005111012 is a wasteful number, since it uses less digits than its factorization.

55005111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785 (or 2783 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 21.

Adding to 55005111012 its reverse (21011150055), we get a palindrome (76016261067).

The spelling of 55005111012 in words is "fifty-five billion, five million, one hundred eleven thousand, twelve".