109865765951 has 2 divisors, whose sum is σ = 109865765952. Its totient is φ = 109865765950.

The previous prime is 109865765909. The next prime is 109865766013. The reversal of 109865765951 is 159567568901.

It is an a-pointer prime, because the next prime (109865766013) can be obtained adding 109865765951 to its sum of digits (62).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109865765951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109865765351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54932882975 + 54932882976.

It is an arithmetic number, because the mean of its divisors is an integer number (54932882976).

Almost surely, 2^109865765951 is an apocalyptic number.

109865765951 is a deficient number, since it is larger than the sum of its proper divisors (1).

109865765951 is an equidigital number, since it uses as much as digits as its factorization.

109865765951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412000, while the sum is 62.

The spelling of 109865765951 in words is "one hundred nine billion, eight hundred sixty-five million, seven hundred sixty-five thousand, nine hundred fifty-one".