51260004349 has 2 divisors, whose sum is σ = 51260004350. Its totient is φ = 51260004348.

The previous prime is 51260004331. The next prime is 51260004371. The reversal of 51260004349 is 94340006215.

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., 51158297124 + 101707225 = 226182^2 + 10085^2 .

It is a cyclic number.

It is not a de Polignac number, because 51260004349 - 2⁵ = 51260004317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51260004379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25630002174 + 25630002175.

It is an arithmetic number, because the mean of its divisors is an integer number (25630002175).

Almost surely, 2^51260004349 is an apocalyptic number.

It is an amenable number.

51260004349 is a deficient number, since it is larger than the sum of its proper divisors (1).

51260004349 is an equidigital number, since it uses as much as digits as its factorization.

51260004349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 51260004349 in words is "fifty-one billion, two hundred sixty million, four thousand, three hundred forty-nine".