105909003512879 has 4 divisors (see below), whose sum is σ = 121038861157584. Its totient is φ = 90779145868176.

The previous prime is 105909003512843. The next prime is 105909003512903. The reversal of 105909003512879 is 978215300909501.

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 105909003512879 - 2⁴⁰ = 104809491885103 is a prime.

It is a super-2 number, since 2×105909003512879² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105909003812879) 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, 7564928822342 + ... + 7564928822355.

It is an arithmetic number, because the mean of its divisors is an integer number (30259715289396).

Almost surely, 2^{105909003512879} is an apocalyptic number.

105909003512879 is a deficient number, since it is larger than the sum of its proper divisors (15129857644705).

105909003512879 is an equidigital number, since it uses as much as digits as its factorization.

105909003512879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15129857644704.

The product of its (nonzero) digits is 6123600, while the sum is 59.

The spelling of 105909003512879 in words is "one hundred five trillion, nine hundred nine billion, three million, five hundred twelve thousand, eight hundred seventy-nine".