20144100400 has 30 divisors (see below), whose sum is σ = 48396202172. Its totient is φ = 8057640000.

The previous prime is 20144100367. The next prime is 20144100401. The reversal of 20144100400 is 400144102.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (20144100401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25179726 + ... + 25180525.

Almost surely, 2^20144100400 is an apocalyptic number.

20144100400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20144100400 is an abundant number, since it is smaller than the sum of its proper divisors (28252101772).

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

20144100400 is a wasteful number, since it uses less digits than its factorization.

20144100400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50360269 (or 50360258 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20144100400 its reverse (400144102), we get a palindrome (20544244502).

The spelling of 20144100400 in words is "twenty billion, one hundred forty-four million, one hundred thousand, four hundred".