20300555560 has 16 divisors (see below), whose sum is σ = 45676250100. Its totient is φ = 8120222208.

The previous prime is 20300555543. The next prime is 20300555591. The reversal of 20300555560 is 6555500302.

It can be written as a sum of positive squares in 2 ways, for example, as 19241573796 + 1058981764 = 138714^2 + 32542^2 .

It is a super-2 number, since 2×20300555560² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253756905 + ... + 253756984.

Almost surely, 2^20300555560 is an apocalyptic number.

20300555560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20300555560 is an abundant number, since it is smaller than the sum of its proper divisors (25375694540).

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

20300555560 is a wasteful number, since it uses less digits than its factorization.

20300555560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507513900 (or 507513896 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 31.

The spelling of 20300555560 in words is "twenty billion, three hundred million, five hundred fifty-five thousand, five hundred sixty".