20120450416 has 80 divisors (see below), whose sum is σ = 44671569408. Its totient is φ = 8689824000.

The previous prime is 20120450411. The next prime is 20120450417. The reversal of 20120450416 is 61405402102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120450411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 594790 + ... + 627706.

Almost surely, 2^20120450416 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 20120450416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22335784704).

20120450416 is an abundant number, since it is smaller than the sum of its proper divisors (24551118992).

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

20120450416 is a wasteful number, since it uses less digits than its factorization.

20120450416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33110 (or 33104 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 20120450416 its reverse (61405402102), we get a palindrome (81525852518).

The spelling of 20120450416 in words is "twenty billion, one hundred twenty million, four hundred fifty thousand, four hundred sixteen".