20401204344 has 32 divisors (see below), whose sum is σ = 51014661840. Its totient is φ = 6798848000.

The previous prime is 20401204339. The next prime is 20401204363. The reversal of 20401204344 is 44340210402.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12694 + ... + 202394.

Almost surely, 2^20401204344 is an apocalyptic number.

20401204344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20401204344 is an abundant number, since it is smaller than the sum of its proper divisors (30613457496).

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

20401204344 is a wasteful number, since it uses less digits than its factorization.

20401204344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194191 (or 194187 counting only the distinct ones).

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

Adding to 20401204344 its reverse (44340210402), we get a palindrome (64741414746).

The spelling of 20401204344 in words is "twenty billion, four hundred one million, two hundred four thousand, three hundred forty-four".