5051709178657 has 2 divisors, whose sum is σ = 5051709178658. Its totient is φ = 5051709178656.

The previous prime is 5051709178601. The next prime is 5051709178717. The reversal of 5051709178657 is 7568719071505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4843326971536 + 208382207121 = 2200756^2 + 456489^2 .

It is a cyclic number.

It is not a de Polignac number, because 5051709178657 - 2²³ = 5051700790049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5051709178595 and 5051709178604.

It is not a weakly prime, because it can be changed into another prime (5051709178457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525854589328 + 2525854589329.

It is an arithmetic number, because the mean of its divisors is an integer number (2525854589329).

Almost surely, 2^{5051709178657} is an apocalyptic number.

It is an amenable number.

5051709178657 is a deficient number, since it is larger than the sum of its proper divisors (1).

5051709178657 is an equidigital number, since it uses as much as digits as its factorization.

5051709178657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18522000, while the sum is 61.

The spelling of 5051709178657 in words is "five trillion, fifty-one billion, seven hundred nine million, one hundred seventy-eight thousand, six hundred fifty-seven".