101780743319 has 2 divisors, whose sum is σ = 101780743320. Its totient is φ = 101780743318.

The previous prime is 101780743279. The next prime is 101780743321. The reversal of 101780743319 is 913347087101.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (913347087101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101780743319 is a prime.

It is a super-2 number, since 2×101780743319² (a number of 23 digits) contains 22 as substring.

Together with 101780743321, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101780743319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101780743349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50890371659 + 50890371660.

It is an arithmetic number, because the mean of its divisors is an integer number (50890371660).

Almost surely, 2^101780743319 is an apocalyptic number.

101780743319 is a deficient number, since it is larger than the sum of its proper divisors (1).

101780743319 is an equidigital number, since it uses as much as digits as its factorization.

101780743319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 44.

The spelling of 101780743319 in words is "one hundred one billion, seven hundred eighty million, seven hundred forty-three thousand, three hundred nineteen".