105671913709 has 4 divisors (see below), whose sum is σ = 108249277500. Its totient is φ = 103094549920.

The previous prime is 105671913707. The next prime is 105671913733. The reversal of 105671913709 is 907319176501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5594591209 + 100077322500 = 74797^2 + 316350^2 .

It is a cyclic number.

It is not a de Polignac number, because 105671913709 - 2¹ = 105671913707 is a prime.

It is a super-2 number, since 2×105671913709² (a number of 23 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 (105671913707) 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, 1288681834 + ... + 1288681915.

It is an arithmetic number, because the mean of its divisors is an integer number (27062319375).

Almost surely, 2^105671913709 is an apocalyptic number.

It is an amenable number.

105671913709 is a deficient number, since it is larger than the sum of its proper divisors (2577363791).

105671913709 is an equidigital number, since it uses as much as digits as its factorization.

105671913709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577363790.

The product of its (nonzero) digits is 357210, while the sum is 49.

The spelling of 105671913709 in words is "one hundred five billion, six hundred seventy-one million, nine hundred thirteen thousand, seven hundred nine".