799858345057 has 2 divisors, whose sum is σ = 799858345058. Its totient is φ = 799858345056.

The previous prime is 799858345051. The next prime is 799858345127. The reversal of 799858345057 is 750543858997.

It is an a-pointer prime, because the next prime (799858345127) can be obtained adding 799858345057 to its sum of digits (70).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 673292455936 + 126565889121 = 820544^2 + 355761^2 .

It is an emirp because it is prime and its reverse (750543858997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 799858345057 - 2³ = 799858345049 is a prime.

It is not a weakly prime, because it can be changed into another prime (799858345051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399929172528 + 399929172529.

It is an arithmetic number, because the mean of its divisors is an integer number (399929172529).

Almost surely, 2^799858345057 is an apocalyptic number.

It is an amenable number.

799858345057 is a deficient number, since it is larger than the sum of its proper divisors (1).

799858345057 is an equidigital number, since it uses as much as digits as its factorization.

799858345057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024000, while the sum is 70.

The spelling of 799858345057 in words is "seven hundred ninety-nine billion, eight hundred fifty-eight million, three hundred forty-five thousand, fifty-seven".