20288502756 has 48 divisors (see below), whose sum is σ = 52609327680. Its totient is φ = 6761612160.

The previous prime is 20288502749. The next prime is 20288502779. The reversal of 20288502756 is 65720588202.

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, 738295 + ... + 765281.

It is an arithmetic number, because the mean of its divisors is an integer number (1096027660).

Almost surely, 2^20288502756 is an apocalyptic number.

It is an amenable number.

20288502756 is an abundant number, since it is smaller than the sum of its proper divisors (32320824924).

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

20288502756 is a wasteful number, since it uses less digits than its factorization.

20288502756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33961 (or 33953 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 20288502756 in words is "twenty billion, two hundred eighty-eight million, five hundred two thousand, seven hundred fifty-six".