20446161408 has 120 divisors (see below), whose sum is σ = 59461212096. Its totient is φ = 6763161600.

The previous prime is 20446161403. The next prime is 20446161469. The reversal of 20446161408 is 80416164402.

It is a happy number.

20446161408 is a `hidden beast` number, since 20 + 4 + 4 + 616 + 14 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20446161403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 586713 + ... + 620583.

Almost surely, 2^20446161408 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 20446161408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29730606048).

20446161408 is an abundant number, since it is smaller than the sum of its proper divisors (39015050688).

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

20446161408 is a wasteful number, since it uses less digits than its factorization.

20446161408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34026 (or 34007 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 20446161408 in words is "twenty billion, four hundred forty-six million, one hundred sixty-one thousand, four hundred eight".