20789405000 has 160 divisors (see below), whose sum is σ = 59951559360. Its totient is φ = 6579360000.

The previous prime is 20789404981. The next prime is 20789405027. The reversal of 20789405000 is 50498702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 432155 + ... + 477845.

It is an arithmetic number, because the mean of its divisors is an integer number (374697246).

Almost surely, 2^20789405000 is an apocalyptic number.

20789405000 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 20789405000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29975779680).

20789405000 is an abundant number, since it is smaller than the sum of its proper divisors (39162154360).

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

20789405000 is a wasteful number, since it uses less digits than its factorization.

20789405000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45737 (or 45718 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 20789405000 in words is "twenty billion, seven hundred eighty-nine million, four hundred five thousand".