109471987019 has 4 divisors (see below), whose sum is σ = 109477977960. Its totient is φ = 109465996080.

The previous prime is 109471986977. The next prime is 109471987021. The reversal of 109471987019 is 910789174901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 109471987019 - 2¹⁶ = 109471921483 is a prime.

It is a super-2 number, since 2×109471987019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109471987069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2967977 + ... + 3004634.

It is an arithmetic number, because the mean of its divisors is an integer number (27369494490).

Almost surely, 2^109471987019 is an apocalyptic number.

109471987019 is a deficient number, since it is larger than the sum of its proper divisors (5990941).

109471987019 is an equidigital number, since it uses as much as digits as its factorization.

109471987019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5990940.

The product of its (nonzero) digits is 1143072, while the sum is 56.

The spelling of 109471987019 in words is "one hundred nine billion, four hundred seventy-one million, nine hundred eighty-seven thousand, nineteen".