55081040028 has 48 divisors (see below), whose sum is σ = 146901431040. Its totient is φ = 15735441024.

The previous prime is 55081040023. The next prime is 55081040039. The reversal of 55081040028 is 82004018055.

It is a super-2 number, since 2×55081040028² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55081040023) 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 15 ways as a sum of consecutive naturals, for example, 702208 + ... + 776696.

It is an arithmetic number, because the mean of its divisors is an integer number (3060446480).

Almost surely, 2^55081040028 is an apocalyptic number.

It is an amenable number.

55081040028 is an abundant number, since it is smaller than the sum of its proper divisors (91820391012).

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

55081040028 is a wasteful number, since it uses less digits than its factorization.

55081040028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83306 (or 83304 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The spelling of 55081040028 in words is "fifty-five billion, eighty-one million, forty thousand, twenty-eight".