102199720769 has 2 divisors, whose sum is σ = 102199720770. Its totient is φ = 102199720768.

The previous prime is 102199720759. The next prime is 102199720781. The reversal of 102199720769 is 967027991201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102024025744 + 175695025 = 319412^2 + 13255^2 .

It is an emirp because it is prime and its reverse (967027991201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102199720769 is a prime.

It is a super-2 number, since 2×102199720769² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102199720769.

It is not a weakly prime, because it can be changed into another prime (102199720759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51099860384 + 51099860385.

It is an arithmetic number, because the mean of its divisors is an integer number (51099860385).

Almost surely, 2^102199720769 is an apocalyptic number.

It is an amenable number.

102199720769 is a deficient number, since it is larger than the sum of its proper divisors (1).

102199720769 is an equidigital number, since it uses as much as digits as its factorization.

102199720769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 53.

The spelling of 102199720769 in words is "one hundred two billion, one hundred ninety-nine million, seven hundred twenty thousand, seven hundred sixty-nine".