5451224120400 has 60 divisors (see below), whose sum is σ = 17462087936192. Its totient is φ = 1453659765120.

The previous prime is 5451224120389. The next prime is 5451224120401. The reversal of 5451224120400 is 40214221545.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5451224120401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2271342184 + ... + 2271344583.

Almost surely, 2^{5451224120400} is an apocalyptic number.

5451224120400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5451224120400 is an abundant number, since it is smaller than the sum of its proper divisors (12010863815792).

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

5451224120400 is a wasteful number, since it uses less digits than its factorization.

5451224120400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4542686788 (or 4542686777 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 5451224120400 its reverse (40214221545), we get a palindrome (5491438341945).

The spelling of 5451224120400 in words is "five trillion, four hundred fifty-one billion, two hundred twenty-four million, one hundred twenty thousand, four hundred".