17906960561911 has 2 divisors, whose sum is σ = 17906960561912. Its totient is φ = 17906960561910.

The previous prime is 17906960561909. The next prime is 17906960561983. The reversal of 17906960561911 is 11916506960971.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17906960561911 - 2¹ = 17906960561909 is a prime.

Together with 17906960561909, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 17906960561911.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17906960561011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8953480280955 + 8953480280956.

It is an arithmetic number, because the mean of its divisors is an integer number (8953480280956).

Almost surely, 2^{17906960561911} is an apocalyptic number.

17906960561911 is a deficient number, since it is larger than the sum of its proper divisors (1).

17906960561911 is an equidigital number, since it uses as much as digits as its factorization.

17906960561911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5511240, while the sum is 61.

The spelling of 17906960561911 in words is "seventeen trillion, nine hundred six billion, nine hundred sixty million, five hundred sixty-one thousand, nine hundred eleven".