20553523848 has 160 divisors (see below), whose sum is σ = 67633695360. Its totient is φ = 5749211520.

The previous prime is 20553523843. The next prime is 20553523877. The reversal of 20553523848 is 84832535502.

20553523848 is a `hidden beast` number, since 2 + 0 + 553 + 52 + 3 + 8 + 48 = 666.

It is not an unprimeable number, because it can be changed into a prime (20553523843) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18240 + ... + 203567.

It is an arithmetic number, because the mean of its divisors is an integer number (422710596).

Almost surely, 2^20553523848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20553523848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33816847680).

20553523848 is an abundant number, since it is smaller than the sum of its proper divisors (47080171512).

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

20553523848 is a wasteful number, since it uses less digits than its factorization.

20553523848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221849 (or 221836 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 20553523848 in words is "twenty billion, five hundred fifty-three million, five hundred twenty-three thousand, eight hundred forty-eight".