20013653123660 has 24 divisors (see below), whose sum is σ = 48032767497120. Its totient is φ = 6861823928064.

The previous prime is 20013653123641. The next prime is 20013653123687. The reversal of 20013653123660 is 6632135631002.

It is a super-2 number, since 2×20013653123660² (a number of 27 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, 71477332445 + ... + 71477332724.

It is an arithmetic number, because the mean of its divisors is an integer number (2001365312380).

Almost surely, 2^{20013653123660} is an apocalyptic number.

20013653123660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20013653123660 is an abundant number, since it is smaller than the sum of its proper divisors (28019114373460).

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

20013653123660 is a wasteful number, since it uses less digits than its factorization.

20013653123660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142954665185 (or 142954665183 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 38.

Adding to 20013653123660 its reverse (6632135631002), we get a palindrome (26645788754662).

The spelling of 20013653123660 in words is "twenty trillion, thirteen billion, six hundred fifty-three million, one hundred twenty-three thousand, six hundred sixty".