51147934423 has 2 divisors, whose sum is σ = 51147934424. Its totient is φ = 51147934422.

The previous prime is 51147934417. The next prime is 51147934427. The reversal of 51147934423 is 32443974115.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51147934423 is a prime.

It is a super-2 number, since 2×51147934423² (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 51147934423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51147934427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25573967211 + 25573967212.

It is an arithmetic number, because the mean of its divisors is an integer number (25573967212).

Almost surely, 2^51147934423 is an apocalyptic number.

51147934423 is a deficient number, since it is larger than the sum of its proper divisors (1).

51147934423 is an equidigital number, since it uses as much as digits as its factorization.

51147934423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 43.

The spelling of 51147934423 in words is "fifty-one billion, one hundred forty-seven million, nine hundred thirty-four thousand, four hundred twenty-three".