20562602120 has 128 divisors (see below), whose sum is σ = 47840284800. Its totient is φ = 7951104000.

The previous prime is 20562602101. The next prime is 20562602129. The reversal of 20562602120 is 2120626502.

It is a self number, because there is not a number n which added to its sum of digits gives 20562602120.

It is not an unprimeable number, because it can be changed into a prime (20562602129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66979007 + ... + 66979313.

It is an arithmetic number, because the mean of its divisors is an integer number (373752225).

Almost surely, 2^20562602120 is an apocalyptic number.

20562602120 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 20562602120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23920142400).

20562602120 is an abundant number, since it is smaller than the sum of its proper divisors (27277682680).

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

20562602120 is a wasteful number, since it uses less digits than its factorization.

20562602120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 20562602120 in words is "twenty billion, five hundred sixty-two million, six hundred two thousand, one hundred twenty".