51555918841600 has 54 divisors (see below), whose sum is σ = 127608954761120. Its totient is φ = 20622367534080.

The previous prime is 51555918841597. The next prime is 51555918841619. The reversal of 51555918841600 is 614881955515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4027799760 + ... + 4027812559.

Almost surely, 2^{51555918841600} is an apocalyptic number.

51555918841600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51555918841600 is an abundant number, since it is smaller than the sum of its proper divisors (76053035919520).

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

51555918841600 is an equidigital number, since it uses as much as digits as its factorization.

51555918841600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8055612345 (or 8055612326 counting only the distinct ones).

The product of its (nonzero) digits is 8640000, while the sum is 58.

The spelling of 51555918841600 in words is "fifty-one trillion, five hundred fifty-five billion, nine hundred eighteen million, eight hundred forty-one thousand, six hundred".