19860068101 has 2 divisors, whose sum is σ = 19860068102. Its totient is φ = 19860068100.

The previous prime is 19860068087. The next prime is 19860068113. The reversal of 19860068101 is 10186006891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12100220001 + 7759848100 = 110001^2 + 88090^2 .

It is an emirp because it is prime and its reverse (10186006891) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 10189009861 and 16890098101.

It is a cyclic number.

It is not a de Polignac number, because 19860068101 - 2⁷ = 19860067973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19860008101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9930034050 + 9930034051.

It is an arithmetic number, because the mean of its divisors is an integer number (9930034051).

Almost surely, 2^19860068101 is an apocalyptic number.

It is an amenable number.

19860068101 is a deficient number, since it is larger than the sum of its proper divisors (1).

19860068101 is an equidigital number, since it uses as much as digits as its factorization.

19860068101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 40.

The spelling of 19860068101 in words is "nineteen billion, eight hundred sixty million, sixty-eight thousand, one hundred one".