109209137071 has 4 divisors (see below), whose sum is σ = 109210451392. Its totient is φ = 109207822752.

The previous prime is 109209137041. The next prime is 109209137129. The reversal of 109209137071 is 170731902901.

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 109209137071 - 2²¹ = 109207039919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109209137041) 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, 523455 + ... + 701728.

It is an arithmetic number, because the mean of its divisors is an integer number (27302612848).

Almost surely, 2^109209137071 is an apocalyptic number.

109209137071 is a deficient number, since it is larger than the sum of its proper divisors (1314321).

109209137071 is an equidigital number, since it uses as much as digits as its factorization.

109209137071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314320.

The product of its (nonzero) digits is 23814, while the sum is 40.

The spelling of 109209137071 in words is "one hundred nine billion, two hundred nine million, one hundred thirty-seven thousand, seventy-one".