20005401400 has 96 divisors (see below), whose sum is σ = 48078061200. Its totient is φ = 7737292800.

The previous prime is 20005401371. The next prime is 20005401413. The reversal of 20005401400 is 410450002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 705904 + ... + 733696.

Almost surely, 2^20005401400 is an apocalyptic number.

20005401400 is a gapful number since it is divisible by the number (20) 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 20005401400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24039030600).

20005401400 is an abundant number, since it is smaller than the sum of its proper divisors (28072659800).

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

20005401400 is a wasteful number, since it uses less digits than its factorization.

20005401400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27929 (or 27920 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

Adding to 20005401400 its reverse (410450002), we get a palindrome (20415851402).

The spelling of 20005401400 in words is "twenty billion, five million, four hundred one thousand, four hundred".