55443756918 has 32 divisors (see below), whose sum is σ = 120982020480. Its totient is φ = 16799218560.

The previous prime is 55443756881. The next prime is 55443757001. The reversal of 55443756918 is 81965734455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 599646 + ... + 685902.

It is an arithmetic number, because the mean of its divisors is an integer number (3780688140).

Almost surely, 2^55443756918 is an apocalyptic number.

55443756918 is an abundant number, since it is smaller than the sum of its proper divisors (65538263562).

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

55443756918 is a wasteful number, since it uses less digits than its factorization.

55443756918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96012.

The product of its digits is 18144000, while the sum is 57.

The spelling of 55443756918 in words is "fifty-five billion, four hundred forty-three million, seven hundred fifty-six thousand, nine hundred eighteen".