109049212787 has 2 divisors, whose sum is σ = 109049212788. Its totient is φ = 109049212786.

The previous prime is 109049212759. The next prime is 109049212819. The reversal of 109049212787 is 787212940901.

It is a weak prime.

It is an emirp because it is prime and its reverse (787212940901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109049212787 - 2¹² = 109049208691 is a prime.

It is not a weakly prime, because it can be changed into another prime (109049212487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54524606393 + 54524606394.

It is an arithmetic number, because the mean of its divisors is an integer number (54524606394).

Almost surely, 2^109049212787 is an apocalyptic number.

109049212787 is a deficient number, since it is larger than the sum of its proper divisors (1).

109049212787 is an equidigital number, since it uses as much as digits as its factorization.

109049212787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 50.

The spelling of 109049212787 in words is "one hundred nine billion, forty-nine million, two hundred twelve thousand, seven hundred eighty-seven".