51728241364400 has 30 divisors (see below), whose sum is σ = 124277099878932. Its totient is φ = 20691296545600.

The previous prime is 51728241364339. The next prime is 51728241364403. The reversal of 51728241364400 is 446314282715.

It is not an unprimeable number, because it can be changed into a prime (51728241364403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64660301306 + ... + 64660302105.

Almost surely, 2^{51728241364400} is an apocalyptic number.

51728241364400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51728241364400 is an abundant number, since it is smaller than the sum of its proper divisors (72548858514532).

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

51728241364400 is a wasteful number, since it uses less digits than its factorization.

51728241364400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129320603429 (or 129320603418 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 51728241364400 in words is "fifty-one trillion, seven hundred twenty-eight billion, two hundred forty-one million, three hundred sixty-four thousand, four hundred".