51715700650049 has 2 divisors, whose sum is σ = 51715700650050. Its totient is φ = 51715700650048.

The previous prime is 51715700650007. The next prime is 51715700650127. The reversal of 51715700650049 is 94005600751715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49137646530625 + 2578054119424 = 7009825^2 + 1605632^2 .

It is a cyclic number.

It is not a de Polignac number, because 51715700650049 - 2⁸ = 51715700649793 is a prime.

It is a super-2 number, since 2×51715700650049² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51715700649979 and 51715700650006.

It is not a weakly prime, because it can be changed into another prime (51715700650349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25857850325024 + 25857850325025.

It is an arithmetic number, because the mean of its divisors is an integer number (25857850325025).

Almost surely, 2^{51715700650049} is an apocalyptic number.

It is an amenable number.

51715700650049 is a deficient number, since it is larger than the sum of its proper divisors (1).

51715700650049 is an equidigital number, since it uses as much as digits as its factorization.

51715700650049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1323000, while the sum is 50.

The spelling of 51715700650049 in words is "fifty-one trillion, seven hundred fifteen billion, seven hundred million, six hundred fifty thousand, forty-nine".