20004310443400 has 24 divisors (see below), whose sum is σ = 46510021781370. Its totient is φ = 8001724177280.

The previous prime is 20004310443347. The next prime is 20004310443413. The reversal of 20004310443400 is 434401340002.

It can be written as a sum of positive squares in 3 ways, for example, as 18706438108836 + 1297872334564 = 4325094^2 + 1139242^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50010775909 + ... + 50010776308.

Almost surely, 2^{20004310443400} is an apocalyptic number.

20004310443400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20004310443400 is an abundant number, since it is smaller than the sum of its proper divisors (26505711337970).

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

20004310443400 is a wasteful number, since it uses less digits than its factorization.

20004310443400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100021552233 (or 100021552224 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20004310443400 its reverse (434401340002), we get a palindrome (20438711783402).

The spelling of 20004310443400 in words is "twenty trillion, four billion, three hundred ten million, four hundred forty-three thousand, four hundred".