20081773432 has 128 divisors (see below), whose sum is σ = 46300584960. Its totient is φ = 7978798080.

The previous prime is 20081773399. The next prime is 20081773489. The reversal of 20081773432 is 23437718002.

It is a junction number, because it is equal to n+sod(n) for n = 20081773391 and 20081773400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8606538 + ... + 8608870.

It is an arithmetic number, because the mean of its divisors is an integer number (361723320).

Almost surely, 2^20081773432 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 20081773432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23150292480).

20081773432 is an abundant number, since it is smaller than the sum of its proper divisors (26218811528).

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

20081773432 is a wasteful number, since it uses less digits than its factorization.

20081773432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573 (or 2569 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 20081773432 in words is "twenty billion, eighty-one million, seven hundred seventy-three thousand, four hundred thirty-two".