20130488856 has 48 divisors (see below), whose sum is σ = 55020279600. Its totient is φ = 6648599232.

The previous prime is 20130488827. The next prime is 20130488933. The reversal of 20130488856 is 65888403102.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1274676 + ... + 1290371.

It is an arithmetic number, because the mean of its divisors is an integer number (1146255825).

Almost surely, 2^20130488856 is an apocalyptic number.

It is an amenable number.

20130488856 is an abundant number, since it is smaller than the sum of its proper divisors (34889790744).

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

20130488856 is a wasteful number, since it uses less digits than its factorization.

20130488856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565168 (or 2565161 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 20130488856 in words is "twenty billion, one hundred thirty million, four hundred eighty-eight thousand, eight hundred fifty-six".