51748656960 has 1120 divisors, whose sum is σ = 226618019712. Its totient is φ = 9862594560.

The previous prime is 51748656959. The next prime is 51748656991. The reversal of 51748656960 is 6965684715.

It is a tau number, because it is divible by the number of its divisors (1120).

It is a self number, because there is not a number n which added to its sum of digits gives 51748656960.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 329609202 + ... + 329609358.

Almost surely, 2^51748656960 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 51748656960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113309009856).

51748656960 is an abundant number, since it is smaller than the sum of its proper divisors (174869362752).

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

51748656960 is a wasteful number, since it uses less digits than its factorization.

51748656960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 51748656960 in words is "fifty-one billion, seven hundred forty-eight million, six hundred fifty-six thousand, nine hundred sixty".