20844374080 has 112 divisors (see below), whose sum is σ = 54050184000. Its totient is φ = 7626479616.

The previous prime is 20844374077. The next prime is 20844374107. The reversal of 20844374080 is 8047344802.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117211 + ... + 235429.

Almost surely, 2^20844374080 is an apocalyptic number.

20844374080 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 20844374080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27025092000).

20844374080 is an abundant number, since it is smaller than the sum of its proper divisors (33205809920).

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

20844374080 is a wasteful number, since it uses less digits than its factorization.

20844374080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118284 (or 118274 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 40.

The spelling of 20844374080 in words is "twenty billion, eight hundred forty-four million, three hundred seventy-four thousand, eighty".