55428991068 has 48 divisors (see below), whose sum is σ = 141410618496. Its totient is φ = 16758730560.

The previous prime is 55428991067. The next prime is 55428991087. The reversal of 55428991068 is 86019982455.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55428990999 and 55428991017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55428991067) 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, 415471 + ... + 532422.

It is an arithmetic number, because the mean of its divisors is an integer number (2946054552).

Almost surely, 2^55428991068 is an apocalyptic number.

It is an amenable number.

55428991068 is an abundant number, since it is smaller than the sum of its proper divisors (85981627428).

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

55428991068 is a wasteful number, since it uses less digits than its factorization.

55428991068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948354 (or 948352 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 57.

The spelling of 55428991068 in words is "fifty-five billion, four hundred twenty-eight million, nine hundred ninety-one thousand, sixty-eight".