51354121319 has 2 divisors, whose sum is σ = 51354121320. Its totient is φ = 51354121318.

The previous prime is 51354121303. The next prime is 51354121321. The reversal of 51354121319 is 91312145315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51354121319 - 2⁴ = 51354121303 is a prime.

It is a super-2 number, since 2×51354121319² (a number of 22 digits) contains 22 as substring.

Together with 51354121321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51354126319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25677060659 + 25677060660.

It is an arithmetic number, because the mean of its divisors is an integer number (25677060660).

Almost surely, 2^51354121319 is an apocalyptic number.

51354121319 is a deficient number, since it is larger than the sum of its proper divisors (1).

51354121319 is an equidigital number, since it uses as much as digits as its factorization.

51354121319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 35.

The spelling of 51354121319 in words is "fifty-one billion, three hundred fifty-four million, one hundred twenty-one thousand, three hundred nineteen".