51431440267 has 2 divisors, whose sum is σ = 51431440268. Its totient is φ = 51431440266.

The previous prime is 51431440237. The next prime is 51431440321. The reversal of 51431440267 is 76204413415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51431440267 - 2⁷ = 51431440139 is a prime.

It is not a weakly prime, because it can be changed into another prime (51431440217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25715720133 + 25715720134.

It is an arithmetic number, because the mean of its divisors is an integer number (25715720134).

Almost surely, 2^51431440267 is an apocalyptic number.

51431440267 is a deficient number, since it is larger than the sum of its proper divisors (1).

51431440267 is an equidigital number, since it uses as much as digits as its factorization.

51431440267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 51431440267 in words is "fifty-one billion, four hundred thirty-one million, four hundred forty thousand, two hundred sixty-seven".