400144541200 has 30 divisors (see below), whose sum is σ = 961347261194. Its totient is φ = 160057816320.

The previous prime is 400144541189. The next prime is 400144541231. The reversal of 400144541200 is 2145441004.

It can be written as a sum of positive squares in 3 ways, for example, as 62076719104 + 338067822096 = 249152^2 + 581436^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 500180277 + ... + 500181076.

Almost surely, 2^400144541200 is an apocalyptic number.

400144541200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400144541200 is an abundant number, since it is smaller than the sum of its proper divisors (561202719994).

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

400144541200 is a wasteful number, since it uses less digits than its factorization.

400144541200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000361371 (or 1000361360 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 400144541200 its reverse (2145441004), we get a palindrome (402289982204).

The spelling of 400144541200 in words is "four hundred billion, one hundred forty-four million, five hundred forty-one thousand, two hundred".