51443464400 has 60 divisors (see below), whose sum is σ = 123619534272. Its totient is φ = 20572955520.

The previous prime is 51443464393. The next prime is 51443464409. The reversal of 51443464400 is 446434415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51443464409) 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, 2350307 + ... + 2372093.

Almost surely, 2^51443464400 is an apocalyptic number.

51443464400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51443464400 is an abundant number, since it is smaller than the sum of its proper divisors (72176069872).

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

51443464400 is a wasteful number, since it uses less digits than its factorization.

51443464400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27708 (or 27697 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 51443464400 its reverse (446434415), we get a palindrome (51889898815).

The spelling of 51443464400 in words is "fifty-one billion, four hundred forty-three million, four hundred sixty-four thousand, four hundred".