51365132480 has 56 divisors (see below), whose sum is σ = 123687596160. Its totient is φ = 20315187200.

The previous prime is 51365132471. The next prime is 51365132501. The reversal of 51365132480 is 8423156315.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 873296 + ... + 930255.

Almost surely, 2^51365132480 is an apocalyptic number.

It is an amenable number.

51365132480 is an abundant number, since it is smaller than the sum of its proper divisors (72322463680).

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

51365132480 is a wasteful number, since it uses less digits than its factorization.

51365132480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803657 (or 1803647 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

Adding to 51365132480 its reverse (8423156315), we get a palindrome (59788288795).

The spelling of 51365132480 in words is "fifty-one billion, three hundred sixty-five million, one hundred thirty-two thousand, four hundred eighty".