20154324416 has 56 divisors (see below), whose sum is σ = 42153657120. Its totient is φ = 9546048512.

The previous prime is 20154324361. The next prime is 20154324419. The reversal of 20154324416 is 61442345102.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154324419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4076 + ... + 200811.

Almost surely, 2^20154324416 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 20154324416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21076828560).

20154324416 is an abundant number, since it is smaller than the sum of its proper divisors (21999332704).

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

20154324416 is a wasteful number, since it uses less digits than its factorization.

20154324416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204981 (or 204971 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 20154324416 its reverse (61442345102), we get a palindrome (81596669518).

The spelling of 20154324416 in words is "twenty billion, one hundred fifty-four million, three hundred twenty-four thousand, four hundred sixteen".