105891298787 has 2 divisors, whose sum is σ = 105891298788. Its totient is φ = 105891298786.

The previous prime is 105891298783. The next prime is 105891298817. The reversal of 105891298787 is 787892198501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105891298787 - 2² = 105891298783 is a prime.

It is a super-2 number, since 2×105891298787² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105891298783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52945649393 + 52945649394.

It is an arithmetic number, because the mean of its divisors is an integer number (52945649394).

Almost surely, 2^105891298787 is an apocalyptic number.

105891298787 is a deficient number, since it is larger than the sum of its proper divisors (1).

105891298787 is an equidigital number, since it uses as much as digits as its factorization.

105891298787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20321280, while the sum is 65.

The spelling of 105891298787 in words is "one hundred five billion, eight hundred ninety-one million, two hundred ninety-eight thousand, seven hundred eighty-seven".