20798158752 has 480 divisors, whose sum is σ = 73941880320. Its totient is φ = 5615350272.

The previous prime is 20798158709. The next prime is 20798158769. The reversal of 20798158752 is 25785189702.

20798158752 is a `hidden beast` number, since 2 + 0 + 7 + 9 + 8 + 1 + 587 + 52 = 666.

It is a super-4 number, since 4×20798158752⁴ (a number of 42 digits) contains 4444 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 442513993 + ... + 442514039.

It is an arithmetic number, because the mean of its divisors is an integer number (154045584).

Almost surely, 2^20798158752 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 20798158752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36970940160).

20798158752 is an abundant number, since it is smaller than the sum of its proper divisors (53143721568).

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

20798158752 is an frugal number, since it uses more digits than its factorization.

20798158752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 54.

The spelling of 20798158752 in words is "twenty billion, seven hundred ninety-eight million, one hundred fifty-eight thousand, seven hundred fifty-two".