51155000511132 has 288 divisors, whose sum is σ = 141035331064320. Its totient is φ = 14387984432640.

The previous prime is 51155000511073. The next prime is 51155000511151. The reversal of 51155000511132 is 23111500055115.

It is a self number, because there is not a number n which added to its sum of digits gives 51155000511132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4323804457 + ... + 4323816287.

It is an arithmetic number, because the mean of its divisors is an integer number (489706010640).

Almost surely, 2^{51155000511132} 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 51155000511132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70517665532160).

51155000511132 is an abundant number, since it is smaller than the sum of its proper divisors (89880330553188).

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

51155000511132 is a wasteful number, since it uses less digits than its factorization.

51155000511132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12441 (or 12432 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 30.

Adding to 51155000511132 its reverse (23111500055115), we get a palindrome (74266500566247).

The spelling of 51155000511132 in words is "fifty-one trillion, one hundred fifty-five billion, five hundred eleven thousand, one hundred thirty-two".