51955077888 has 432 divisors, whose sum is σ = 180242536320. Its totient is φ = 14718412800.

The previous prime is 51955077851. The next prime is 51955077899. The reversal of 51955077888 is 88877055915.

51955077888 is a `hidden beast` number, since 5 + 1 + 9 + 550 + 7 + 78 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44367543 + ... + 44368713.

Almost surely, 2^51955077888 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 51955077888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90121268160).

51955077888 is an abundant number, since it is smaller than the sum of its proper divisors (128287458432).

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

51955077888 is a wasteful number, since it uses less digits than its factorization.

51955077888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341 (or 1314 counting only the distinct ones).

The product of its (nonzero) digits is 28224000, while the sum is 63.

The spelling of 51955077888 in words is "fifty-one billion, nine hundred fifty-five million, seventy-seven thousand, eight hundred eighty-eight".