51249197143 has 2 divisors, whose sum is σ = 51249197144. Its totient is φ = 51249197142.

The previous prime is 51249197053. The next prime is 51249197161. The reversal of 51249197143 is 34179194215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51249197143 - 2⁹ = 51249196631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51249197093 and 51249197102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51249195143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25624598571 + 25624598572.

It is an arithmetic number, because the mean of its divisors is an integer number (25624598572).

Almost surely, 2^51249197143 is an apocalyptic number.

51249197143 is a deficient number, since it is larger than the sum of its proper divisors (1).

51249197143 is an equidigital number, since it uses as much as digits as its factorization.

51249197143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The spelling of 51249197143 in words is "fifty-one billion, two hundred forty-nine million, one hundred ninety-seven thousand, one hundred forty-three".