51435131532 has 24 divisors (see below), whose sum is σ = 120424923696. Its totient is φ = 17086527168.

The previous prime is 51435131519. The next prime is 51435131533. The reversal of 51435131532 is 23513153415.

It is a junction number, because it is equal to n+sod(n) for n = 51435131493 and 51435131502.

It is not an unprimeable number, because it can be changed into a prime (51435131533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7310923 + ... + 7317954.

It is an arithmetic number, because the mean of its divisors is an integer number (5017705154).

Almost surely, 2^51435131532 is an apocalyptic number.

It is an amenable number.

51435131532 is an abundant number, since it is smaller than the sum of its proper divisors (68989792164).

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

51435131532 is a wasteful number, since it uses less digits than its factorization.

51435131532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14629177 (or 14629175 counting only the distinct ones).

The product of its digits is 27000, while the sum is 33.

Adding to 51435131532 its reverse (23513153415), we get a palindrome (74948284947).

The spelling of 51435131532 in words is "fifty-one billion, four hundred thirty-five million, one hundred thirty-one thousand, five hundred thirty-two".