20788554860 has 24 divisors (see below), whose sum is σ = 43781789520. Its totient is φ = 8291455424.

The previous prime is 20788554827. The next prime is 20788554869. The reversal of 20788554860 is 6845588702.

It is not an unprimeable number, because it can be changed into a prime (20788554869) 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, 1490795 + ... + 1504674.

It is an arithmetic number, because the mean of its divisors is an integer number (1824241230).

Almost surely, 2^20788554860 is an apocalyptic number.

20788554860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20788554860 is an abundant number, since it is smaller than the sum of its proper divisors (22993234660).

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

20788554860 is a wasteful number, since it uses less digits than its factorization.

20788554860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995825 (or 2995823 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 53.

The spelling of 20788554860 in words is "twenty billion, seven hundred eighty-eight million, five hundred fifty-four thousand, eight hundred sixty".