20513170768060 has 96 divisors (see below), whose sum is σ = 46910767176000. Its totient is φ = 7505004036096.

The previous prime is 20513170768039. The next prime is 20513170768133. The reversal of 20513170768060 is 6086707131502.

It is a self number, because there is not a number n which added to its sum of digits gives 20513170768060.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368139322 + ... + 368195038.

It is an arithmetic number, because the mean of its divisors is an integer number (488653824750).

Almost surely, 2^{20513170768060} is an apocalyptic number.

20513170768060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20513170768060 is an abundant number, since it is smaller than the sum of its proper divisors (26397596407940).

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

20513170768060 is a wasteful number, since it uses less digits than its factorization.

20513170768060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89183 (or 89181 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

Adding to 20513170768060 its reverse (6086707131502), we get a palindrome (26599877899562).

The spelling of 20513170768060 in words is "twenty trillion, five hundred thirteen billion, one hundred seventy million, seven hundred sixty-eight thousand, sixty".