51170155243 has 2 divisors, whose sum is σ = 51170155244. Its totient is φ = 51170155242.

The previous prime is 51170155189. The next prime is 51170155307. The reversal of 51170155243 is 34255107115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51170155243 - 2⁹ = 51170154731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51170155199 and 51170155208.

It is not a weakly prime, because it can be changed into another prime (51170155943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25585077621 + 25585077622.

It is an arithmetic number, because the mean of its divisors is an integer number (25585077622).

Almost surely, 2^51170155243 is an apocalyptic number.

51170155243 is a deficient number, since it is larger than the sum of its proper divisors (1).

51170155243 is an equidigital number, since it uses as much as digits as its factorization.

51170155243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 34.

The spelling of 51170155243 in words is "fifty-one billion, one hundred seventy million, one hundred fifty-five thousand, two hundred forty-three".