20335442560 has 64 divisors (see below), whose sum is σ = 48631753800. Its totient is φ = 8131276800.

The previous prime is 20335442509. The next prime is 20335442581. The reversal of 20335442560 is 6524453302.

It can be written as a sum of positive squares in 4 ways, for example, as 8985523264 + 11349919296 = 94792^2 + 106536^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×20335442560² (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 7 ways as a sum of consecutive naturals, for example, 3261526 + ... + 3267754.

Almost surely, 2^20335442560 is an apocalyptic number.

20335442560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20335442560 is an abundant number, since it is smaller than the sum of its proper divisors (28296311240).

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

20335442560 is an equidigital number, since it uses as much as digits as its factorization.

20335442560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11349 (or 11337 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 20335442560 its reverse (6524453302), we get a palindrome (26859895862).

The spelling of 20335442560 in words is "twenty billion, three hundred thirty-five million, four hundred forty-two thousand, five hundred sixty".