20303313444 has 96 divisors (see below), whose sum is σ = 54022375680. Its totient is φ = 6591974400.

The previous prime is 20303313427. The next prime is 20303313461. The reversal of 20303313444 is 44431330302.

20303313444 is a `hidden beast` number, since 2 + 0 + 303 + 313 + 4 + 44 = 666.

It is an interprime number because it is at equal distance from previous prime (20303313427) and next prime (20303313461).

It is a super-2 number, since 2×20303313444² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 663604 + ... + 693524.

It is an arithmetic number, because the mean of its divisors is an integer number (562733080).

Almost surely, 2^20303313444 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 20303313444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27011187840).

20303313444 is an abundant number, since it is smaller than the sum of its proper divisors (33719062236).

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

20303313444 is a wasteful number, since it uses less digits than its factorization.

20303313444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30098 (or 30090 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 20303313444 its reverse (44431330302), we get a palindrome (64734643746).

The spelling of 20303313444 in words is "twenty billion, three hundred three million, three hundred thirteen thousand, four hundred forty-four".