87793820119897 has 2 divisors, whose sum is σ = 87793820119898. Its totient is φ = 87793820119896.

The previous prime is 87793820119867. The next prime is 87793820119909. The reversal of 87793820119897 is 79891102839778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75477538703961 + 12316281415936 = 8687781^2 + 3509456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87793820119897 is a prime.

It is not a weakly prime, because it can be changed into another prime (87793820119867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43896910059948 + 43896910059949.

It is an arithmetic number, because the mean of its divisors is an integer number (43896910059949).

Almost surely, 2^{87793820119897} is an apocalyptic number.

It is an amenable number.

87793820119897 is a deficient number, since it is larger than the sum of its proper divisors (1).

87793820119897 is an equidigital number, since it uses as much as digits as its factorization.

87793820119897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768144384, while the sum is 79.

The spelling of 87793820119897 in words is "eighty-seven trillion, seven hundred ninety-three billion, eight hundred twenty million, one hundred nineteen thousand, eight hundred ninety-seven".