109509667819 has 2 divisors, whose sum is σ = 109509667820. Its totient is φ = 109509667818.

The previous prime is 109509667793. The next prime is 109509667859. The reversal of 109509667819 is 918766905901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109509667819 - 2¹⁹ = 109509143531 is a prime.

It is a super-2 number, since 2×109509667819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (109509667859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54754833909 + 54754833910.

It is an arithmetic number, because the mean of its divisors is an integer number (54754833910).

Almost surely, 2^109509667819 is an apocalyptic number.

109509667819 is a deficient number, since it is larger than the sum of its proper divisors (1).

109509667819 is an equidigital number, since it uses as much as digits as its factorization.

109509667819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7348320, while the sum is 61.

It can be divided in two parts, 10950 and 9667819, that added together give a palindrome (9678769).

The spelling of 109509667819 in words is "one hundred nine billion, five hundred nine million, six hundred sixty-seven thousand, eight hundred nineteen".