105345479391 has 4 divisors (see below), whose sum is σ = 140460639192. Its totient is φ = 70230319592.

The previous prime is 105345479377. The next prime is 105345479441. The reversal of 105345479391 is 193974543501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193974543501 = 3 ⋅64658181167.

It is a cyclic number.

It is not a de Polignac number, because 105345479391 - 2⁷ = 105345479263 is a prime.

It is a super-3 number, since 3×105345479391³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105345479311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17557579896 + ... + 17557579901.

It is an arithmetic number, because the mean of its divisors is an integer number (35115159798).

Almost surely, 2^105345479391 is an apocalyptic number.

105345479391 is a deficient number, since it is larger than the sum of its proper divisors (35115159801).

105345479391 is an equidigital number, since it uses as much as digits as its factorization.

105345479391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35115159800.

The product of its (nonzero) digits is 2041200, while the sum is 51.

The spelling of 105345479391 in words is "one hundred five billion, three hundred forty-five million, four hundred seventy-nine thousand, three hundred ninety-one".