51500344455 has 128 divisors (see below), whose sum is σ = 110513356800. Its totient is φ = 22228877952.

The previous prime is 51500344433. The next prime is 51500344471. The reversal of 51500344455 is 55444300515.

It is not a de Polignac number, because 51500344455 - 2⁷ = 51500344327 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5507514 + ... + 5516856.

It is an arithmetic number, because the mean of its divisors is an integer number (863385600).

Almost surely, 2^51500344455 is an apocalyptic number.

51500344455 is an abundant number, since it is smaller than the sum of its proper divisors (59013012345).

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

51500344455 is a wasteful number, since it uses less digits than its factorization.

51500344455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9690 (or 9684 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 51500344455 in words is "fifty-one billion, five hundred million, three hundred forty-four thousand, four hundred fifty-five".