51641068243 has 2 divisors, whose sum is σ = 51641068244. Its totient is φ = 51641068242.

The previous prime is 51641068211. The next prime is 51641068247. The reversal of 51641068243 is 34286014615.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51641068243 - 2⁵ = 51641068211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51641068196 and 51641068205.

It is not a weakly prime, because it can be changed into another prime (51641068247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25820534121 + 25820534122.

It is an arithmetic number, because the mean of its divisors is an integer number (25820534122).

Almost surely, 2^51641068243 is an apocalyptic number.

51641068243 is a deficient number, since it is larger than the sum of its proper divisors (1).

51641068243 is an equidigital number, since it uses as much as digits as its factorization.

51641068243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 51641068243 in words is "fifty-one billion, six hundred forty-one million, sixty-eight thousand, two hundred forty-three".