55268003991 has 8 divisors (see below), whose sum is σ = 73699199344. Its totient is φ = 36841072320.

The previous prime is 55268003953. The next prime is 55268004083. The reversal of 55268003991 is 19930086255.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55268003991 - 2¹⁹ = 55267479703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55268003991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55268003191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1035550 + ... + 1087611.

It is an arithmetic number, because the mean of its divisors is an integer number (9212399918).

Almost surely, 2^55268003991 is an apocalyptic number.

55268003991 is a deficient number, since it is larger than the sum of its proper divisors (18431195353).

55268003991 is a wasteful number, since it uses less digits than its factorization.

55268003991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131841.

The product of its (nonzero) digits is 583200, while the sum is 48.

The spelling of 55268003991 in words is "fifty-five billion, two hundred sixty-eight million, three thousand, nine hundred ninety-one".