400453321200 has 60 divisors (see below), whose sum is σ = 1282785476088. Its totient is φ = 106787552000.

The previous prime is 400453321199. The next prime is 400453321207. The reversal of 400453321200 is 2123354004.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×400453321200² (a number of 24 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400453321207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166854351 + ... + 166856750.

Almost surely, 2^400453321200 is an apocalyptic number.

400453321200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400453321200 is an abundant number, since it is smaller than the sum of its proper divisors (882332154888).

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

400453321200 is a wasteful number, since it uses less digits than its factorization.

400453321200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333711122 (or 333711111 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 400453321200 its reverse (2123354004), we get a palindrome (402576675204).

The spelling of 400453321200 in words is "four hundred billion, four hundred fifty-three million, three hundred twenty-one thousand, two hundred".