55503578823 has 48 divisors (see below), whose sum is σ = 94942848000. Its totient is φ = 28219498560.

The previous prime is 55503578821. The next prime is 55503578833. The reversal of 55503578823 is 32887530555.

It is not a de Polignac number, because 55503578823 - 2¹ = 55503578821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55503578821) 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 47 ways as a sum of consecutive naturals, for example, 112948 + ... + 351801.

It is an arithmetic number, because the mean of its divisors is an integer number (1977976000).

Almost surely, 2^55503578823 is an apocalyptic number.

55503578823 is a deficient number, since it is larger than the sum of its proper divisors (39439269177).

55503578823 is a wasteful number, since it uses less digits than its factorization.

55503578823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464828 (or 464817 counting only the distinct ones).

The product of its (nonzero) digits is 5040000, while the sum is 51.

The spelling of 55503578823 in words is "fifty-five billion, five hundred three million, five hundred seventy-eight thousand, eight hundred twenty-three".