20310304402432 has 132 divisors (see below), whose sum is σ = 44851609843600. Its totient is φ = 9185553653760.

The previous prime is 20310304402429. The next prime is 20310304402439. The reversal of 20310304402432 is 23420440301302.

It is a self number, because there is not a number n which added to its sum of digits gives 20310304402432.

It is not an unprimeable number, because it can be changed into a prime (20310304402439) 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, 24245038 + ... + 25068754.

Almost surely, 2^{20310304402432} is an apocalyptic number.

20310304402432 is a gapful number since it is divisible by the number (22) 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 20310304402432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22425804921800).

20310304402432 is an abundant number, since it is smaller than the sum of its proper divisors (24541305441168).

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

20310304402432 is a wasteful number, since it uses less digits than its factorization.

20310304402432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823958 (or 823929 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 20310304402432 its reverse (23420440301302), we get a palindrome (43730744703734).

The spelling of 20310304402432 in words is "twenty trillion, three hundred ten billion, three hundred four million, four hundred two thousand, four hundred thirty-two".