51404051340400 has 120 divisors (see below), whose sum is σ = 135363856658688. Its totient is φ = 18603792480000.

The previous prime is 51404051340379. The next prime is 51404051340407. The reversal of 51404051340400 is 404315040415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51404051340407) 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 23 ways as a sum of consecutive naturals, for example, 26755816 + ... + 28612615.

Almost surely, 2^{51404051340400} is an apocalyptic number.

51404051340400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51404051340400 is an abundant number, since it is smaller than the sum of its proper divisors (83959805318288).

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

51404051340400 is a wasteful number, since it uses less digits than its factorization.

51404051340400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55368671 (or 55368660 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 51404051340400 its reverse (404315040415), we get a palindrome (51808366380815).

The spelling of 51404051340400 in words is "fifty-one trillion, four hundred four billion, fifty-one million, three hundred forty thousand, four hundred".