993538471799 has 2 divisors, whose sum is σ = 993538471800. Its totient is φ = 993538471798.

The previous prime is 993538471621. The next prime is 993538471801. The reversal of 993538471799 is 997174835399.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-993538471799 is a prime.

Together with 993538471801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993538471399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496769235899 + 496769235900.

It is an arithmetic number, because the mean of its divisors is an integer number (496769235900).

Almost surely, 2^993538471799 is an apocalyptic number.

993538471799 is a deficient number, since it is larger than the sum of its proper divisors (1).

993538471799 is an equidigital number, since it uses as much as digits as its factorization.

993538471799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 462944160, while the sum is 74.

The spelling of 993538471799 in words is "nine hundred ninety-three billion, five hundred thirty-eight million, four hundred seventy-one thousand, seven hundred ninety-nine".