51132235512 has 64 divisors (see below), whose sum is σ = 132506726400. Its totient is φ = 16425198720.

The previous prime is 51132235421. The next prime is 51132235519. The reversal of 51132235512 is 21553223115.

It is a super-2 number, since 2×51132235512² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51132235512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51132235519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34038 + ... + 321594.

It is an arithmetic number, because the mean of its divisors is an integer number (2070417600).

Almost surely, 2^51132235512 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 51132235512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66253363200).

51132235512 is an abundant number, since it is smaller than the sum of its proper divisors (81374490888).

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

51132235512 is a wasteful number, since it uses less digits than its factorization.

51132235512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287836 (or 287832 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

Adding to 51132235512 its reverse (21553223115), we get a palindrome (72685458627).

The spelling of 51132235512 in words is "fifty-one billion, one hundred thirty-two million, two hundred thirty-five thousand, five hundred twelve".