20030444012400 has 60 divisors (see below), whose sum is σ = 64164188990232. Its totient is φ = 5341451736320.

The previous prime is 20030444012399. The next prime is 20030444012401. The reversal of 20030444012400 is 421044403002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20030444012399) and next prime (20030444012401).

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×20030444012400² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030444012401) 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, 8346017139 + ... + 8346019538.

Almost surely, 2^{20030444012400} is an apocalyptic number.

20030444012400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20030444012400 is an abundant number, since it is smaller than the sum of its proper divisors (44133744977832).

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

20030444012400 is a wasteful number, since it uses less digits than its factorization.

20030444012400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16692036698 (or 16692036687 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20030444012400 its reverse (421044403002), we get a palindrome (20451488415402).

The spelling of 20030444012400 in words is "twenty trillion, thirty billion, four hundred forty-four million, twelve thousand, four hundred".