20969867060 has 24 divisors (see below), whose sum is σ = 44090393256. Its totient is φ = 8377723520.

The previous prime is 20969867059. The next prime is 20969867131. The reversal of 20969867060 is 6076896902.

It can be written as a sum of positive squares in 4 ways, for example, as 41036836 + 20928830224 = 6406^2 + 144668^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20969866993 and 20969867011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622127 + ... + 654966.

It is an arithmetic number, because the mean of its divisors is an integer number (1837099719).

Almost surely, 2^20969867060 is an apocalyptic number.

20969867060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20969867060 is an abundant number, since it is smaller than the sum of its proper divisors (23120526196).

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

20969867060 is a wasteful number, since it uses less digits than its factorization.

20969867060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277923 (or 1277921 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 20969867060 in words is "twenty billion, nine hundred sixty-nine million, eight hundred sixty-seven thousand, sixty".