20855245752 has 48 divisors (see below), whose sum is σ = 61617773880. Its totient is φ = 6319771200.

The previous prime is 20855245729. The next prime is 20855245769. The reversal of 20855245752 is 25754255802.

20855245752 is a `hidden beast` number, since 2 + 0 + 8 + 55 + 24 + 575 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20855245698 and 20855245707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13165399 + ... + 13166982.

Almost surely, 2^20855245752 is an apocalyptic number.

20855245752 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20855245752 is an abundant number, since it is smaller than the sum of its proper divisors (40762528128).

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

20855245752 is a wasteful number, since it uses less digits than its factorization.

20855245752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26332404 (or 26332397 counting only the distinct ones).

The product of its (nonzero) digits is 1120000, while the sum is 45.

The spelling of 20855245752 in words is "twenty billion, eight hundred fifty-five million, two hundred forty-five thousand, seven hundred fifty-two".