51325412361 has 4 divisors (see below), whose sum is σ = 68433883152. Its totient is φ = 34216941572.

The previous prime is 51325412309. The next prime is 51325412471. The reversal of 51325412361 is 16321452315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51325412361 - 2⁹ = 51325411849 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51325412561) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8554235391 + ... + 8554235396.

It is an arithmetic number, because the mean of its divisors is an integer number (17108470788).

Almost surely, 2^51325412361 is an apocalyptic number.

It is an amenable number.

51325412361 is a deficient number, since it is larger than the sum of its proper divisors (17108470791).

51325412361 is a wasteful number, since it uses less digits than its factorization.

51325412361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17108470790.

The product of its digits is 21600, while the sum is 33.

Adding to 51325412361 its reverse (16321452315), we get a palindrome (67646864676).

The spelling of 51325412361 in words is "fifty-one billion, three hundred twenty-five million, four hundred twelve thousand, three hundred sixty-one".