20854858752 has 616 divisors, whose sum is σ = 77180350016. Its totient is φ = 5482266624.

The previous prime is 20854858727. The next prime is 20854858763. The reversal of 20854858752 is 25785845802.

20854858752 is a `hidden beast` number, since 2 + 0 + 8 + 5 + 4 + 8 + 587 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 67930983 + ... + 67931289.

It is an arithmetic number, because the mean of its divisors is an integer number (125292776).

Almost surely, 2^20854858752 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 20854858752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38590175008).

20854858752 is an abundant number, since it is smaller than the sum of its proper divisors (56325491264).

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

20854858752 is an equidigital number, since it uses as much as digits as its factorization.

20854858752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 7168000, while the sum is 54.

The spelling of 20854858752 in words is "twenty billion, eight hundred fifty-four million, eight hundred fifty-eight thousand, seven hundred fifty-two".