10111859887 has 2 divisors, whose sum is σ = 10111859888. Its totient is φ = 10111859886.

The previous prime is 10111859881. The next prime is 10111859897. The reversal of 10111859887 is 78895811101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10111859887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10111859887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10111859881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055929943 + 5055929944.

It is an arithmetic number, because the mean of its divisors is an integer number (5055929944).

Almost surely, 2^10111859887 is an apocalyptic number.

10111859887 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111859887 is an equidigital number, since it uses as much as digits as its factorization.

10111859887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 49.

The spelling of 10111859887 in words is "ten billion, one hundred eleven million, eight hundred fifty-nine thousand, eight hundred eighty-seven".