51479358349 has 2 divisors, whose sum is σ = 51479358350. Its totient is φ = 51479358348.

The previous prime is 51479358311. The next prime is 51479358389. The reversal of 51479358349 is 94385397415.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41486357124 + 9993001225 = 203682^2 + 99965^2 .

It is a cyclic number.

It is not a de Polignac number, because 51479358349 - 2⁷ = 51479358221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51479358293 and 51479358302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51479358389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25739679174 + 25739679175.

It is an arithmetic number, because the mean of its divisors is an integer number (25739679175).

Almost surely, 2^51479358349 is an apocalyptic number.

It is an amenable number.

51479358349 is a deficient number, since it is larger than the sum of its proper divisors (1).

51479358349 is an equidigital number, since it uses as much as digits as its factorization.

51479358349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16329600, while the sum is 58.

The spelling of 51479358349 in words is "fifty-one billion, four hundred seventy-nine million, three hundred fifty-eight thousand, three hundred forty-nine".