20652538056510 has 128 divisors (see below), whose sum is σ = 52004059914240. Its totient is φ = 5242948038144.

The previous prime is 20652538056461. The next prime is 20652538056529. The reversal of 20652538056510 is 1565083525602.

It is a self number, because there is not a number n which added to its sum of digits gives 20652538056510.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 183425611 + ... + 183538169.

It is an arithmetic number, because the mean of its divisors is an integer number (406281718080).

Almost surely, 2^{20652538056510} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20652538056510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26002029957120).

20652538056510 is an abundant number, since it is smaller than the sum of its proper divisors (31351521857730).

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

20652538056510 is a wasteful number, since it uses less digits than its factorization.

20652538056510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116170.

The product of its (nonzero) digits is 2160000, while the sum is 48.

The spelling of 20652538056510 in words is "twenty trillion, six hundred fifty-two billion, five hundred thirty-eight million, fifty-six thousand, five hundred ten".