20552765120 has 112 divisors (see below), whose sum is σ = 51587765760. Its totient is φ = 7777741824.

The previous prime is 20552765117. The next prime is 20552765137. The reversal of 20552765120 is 2156725502.

It is a super-2 number, since 2×20552765120² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5512697 + ... + 5516423.

Almost surely, 2^20552765120 is an apocalyptic number.

20552765120 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 20552765120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25793882880).

20552765120 is an abundant number, since it is smaller than the sum of its proper divisors (31035000640).

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

20552765120 is a wasteful number, since it uses less digits than its factorization.

20552765120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670 (or 4660 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The spelling of 20552765120 in words is "twenty billion, five hundred fifty-two million, seven hundred sixty-five thousand, one hundred twenty".