51910754486656 has 128 divisors (see below), whose sum is σ = 114853882348800. Its totient is φ = 23220996556800.

The previous prime is 51910754486629. The next prime is 51910754486671. The reversal of 51910754486656 is 65668445701915.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 51910754486591 and 51910754486600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3246891 + ... + 10694101.

It is an arithmetic number, because the mean of its divisors is an integer number (897295955850).

Almost surely, 2^{51910754486656} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51910754486656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57426941174400).

51910754486656 is an abundant number, since it is smaller than the sum of its proper divisors (62943127862144).

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

51910754486656 is a wasteful number, since it uses less digits than its factorization.

51910754486656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7447368 (or 7447356 counting only the distinct ones).

The product of its (nonzero) digits is 217728000, while the sum is 67.

The spelling of 51910754486656 in words is "fifty-one trillion, nine hundred ten billion, seven hundred fifty-four million, four hundred eighty-six thousand, six hundred fifty-six".