52317728305991 has 2 divisors, whose sum is σ = 52317728305992. Its totient is φ = 52317728305990.

The previous prime is 52317728305867. The next prime is 52317728306059. The reversal of 52317728305991 is 19950382771325.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52317728305991 is a prime.

It is a super-3 number, since 3×52317728305991³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52317728395991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26158864152995 + 26158864152996.

It is an arithmetic number, because the mean of its divisors is an integer number (26158864152996).

Almost surely, 2^{52317728305991} is an apocalyptic number.

52317728305991 is a deficient number, since it is larger than the sum of its proper divisors (1).

52317728305991 is an equidigital number, since it uses as much as digits as its factorization.

52317728305991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28576800, while the sum is 62.

The spelling of 52317728305991 in words is "fifty-two trillion, three hundred seventeen billion, seven hundred twenty-eight million, three hundred five thousand, nine hundred ninety-one".