51430884855552 has 432 divisors, whose sum is σ = 164875136025600. Its totient is φ = 15351879352320.

The previous prime is 51430884855517. The next prime is 51430884855557. The reversal of 51430884855552 is 25555848803415.

51430884855552 is a `hidden beast` number, since 5 + 1 + 4 + 30 + 8 + 8 + 48 + 5 + 5 + 552 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 51430884855552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51430884855557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57912724 + ... + 58794092.

Almost surely, 2^{51430884855552} 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 51430884855552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82437568012800).

51430884855552 is an abundant number, since it is smaller than the sum of its proper divisors (113444251170048).

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

51430884855552 is a wasteful number, since it uses less digits than its factorization.

51430884855552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881484 (or 881467 counting only the distinct ones).

The product of its (nonzero) digits is 153600000, while the sum is 63.

The spelling of 51430884855552 in words is "fifty-one trillion, four hundred thirty billion, eight hundred eighty-four million, eight hundred fifty-five thousand, five hundred fifty-two".