51120307423 has 4 divisors (see below), whose sum is σ = 51131614248. Its totient is φ = 51109000600.

The previous prime is 51120307417. The next prime is 51120307429. The reversal of 51120307423 is 32470302115.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (51120307417) and next prime (51120307429).

It is a cyclic number.

It is not a de Polignac number, because 51120307423 - 2⁵ = 51120307391 is a prime.

It is a super-2 number, since 2×51120307423² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51120307391 and 51120307400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51120307429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5646628 + ... + 5655673.

It is an arithmetic number, because the mean of its divisors is an integer number (12782903562).

Almost surely, 2^51120307423 is an apocalyptic number.

51120307423 is a deficient number, since it is larger than the sum of its proper divisors (11306825).

51120307423 is a wasteful number, since it uses less digits than its factorization.

51120307423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11306824.

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 51120307423 its reverse (32470302115), we get a palindrome (83590609538).

The spelling of 51120307423 in words is "fifty-one billion, one hundred twenty million, three hundred seven thousand, four hundred twenty-three".