20013653135360 has 52 divisors (see below), whose sum is σ = 48026904199068. Its totient is φ = 8005461245952.

The previous prime is 20013653135303. The next prime is 20013653135393. The reversal of 20013653135360 is 6353135631002.

It can be written as a sum of positive squares in 2 ways, for example, as 6523488108544 + 13490165026816 = 2554112^2 + 3672896^2 .

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, 488594099 + ... + 488635058.

Almost surely, 2^{20013653135360} is an apocalyptic number.

20013653135360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20013653135360 is an abundant number, since it is smaller than the sum of its proper divisors (28013251063708).

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

20013653135360 is an frugal number, since it uses more digits than its factorization.

20013653135360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977229186 (or 977229164 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 38.

Adding to 20013653135360 its reverse (6353135631002), we get a palindrome (26366788766362).

The spelling of 20013653135360 in words is "twenty trillion, thirteen billion, six hundred fifty-three million, one hundred thirty-five thousand, three hundred sixty".