20144311400 has 24 divisors (see below), whose sum is σ = 46835524470. Its totient is φ = 8057724480.

The previous prime is 20144311387. The next prime is 20144311489. The reversal of 20144311400 is 411344102.

It can be written as a sum of positive squares in 3 ways, for example, as 19620725476 + 523585924 = 140074^2 + 22882^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 50360579 + ... + 50360978.

Almost surely, 2^20144311400 is an apocalyptic number.

20144311400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20144311400 is an abundant number, since it is smaller than the sum of its proper divisors (26691213070).

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

20144311400 is a wasteful number, since it uses less digits than its factorization.

20144311400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100721573 (or 100721564 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20144311400 its reverse (411344102), we get a palindrome (20555655502).

The spelling of 20144311400 in words is "twenty billion, one hundred forty-four million, three hundred eleven thousand, four hundred".