51635023155257 has 2 divisors, whose sum is σ = 51635023155258. Its totient is φ = 51635023155256.

The previous prime is 51635023155151. The next prime is 51635023155259. The reversal of 51635023155257 is 75255132053615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40910210339881 + 10724812815376 = 6396109^2 + 3274876^2 .

It is a cyclic number.

It is not a de Polignac number, because 51635023155257 - 2²⁴ = 51635006378041 is a prime.

Together with 51635023155259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51635023155259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25817511577628 + 25817511577629.

It is an arithmetic number, because the mean of its divisors is an integer number (25817511577629).

Almost surely, 2^{51635023155257} is an apocalyptic number.

It is an amenable number.

51635023155257 is a deficient number, since it is larger than the sum of its proper divisors (1).

51635023155257 is an equidigital number, since it uses as much as digits as its factorization.

51635023155257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4725000, while the sum is 50.

The spelling of 51635023155257 in words is "fifty-one trillion, six hundred thirty-five billion, twenty-three million, one hundred fifty-five thousand, two hundred fifty-seven".