20613515524120 has 96 divisors (see below), whose sum is σ = 47566258639200. Its totient is φ = 8039725240320.

The previous prime is 20613515524099. The next prime is 20613515524139. The reversal of 20613515524120 is 2142551531602.

It is a self number, because there is not a number n which added to its sum of digits gives 20613515524120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119399221 + ... + 119571739.

It is an arithmetic number, because the mean of its divisors is an integer number (495481860825).

Almost surely, 2^{20613515524120} is an apocalyptic number.

20613515524120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20613515524120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23783129319600).

20613515524120 is an abundant number, since it is smaller than the sum of its proper divisors (26952743115080).

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

20613515524120 is a wasteful number, since it uses less digits than its factorization.

20613515524120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174389 (or 174344 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 20613515524120 in words is "twenty trillion, six hundred thirteen billion, five hundred fifteen million, five hundred twenty-four thousand, one hundred twenty".