105444025539 has 4 divisors (see below), whose sum is σ = 140592034056. Its totient is φ = 70296017024.

The previous prime is 105444025523. The next prime is 105444025543. The reversal of 105444025539 is 935520444501.

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 105444025539 - 2⁴ = 105444025523 is a prime.

It is a super-2 number, since 2×105444025539² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105444025539.

It is not an unprimeable number, because it can be changed into a prime (105444025559) 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, 17574004254 + ... + 17574004259.

It is an arithmetic number, because the mean of its divisors is an integer number (35148008514).

Almost surely, 2^105444025539 is an apocalyptic number.

105444025539 is a deficient number, since it is larger than the sum of its proper divisors (35148008517).

105444025539 is an equidigital number, since it uses as much as digits as its factorization.

105444025539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35148008516.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 105444025539 in words is "one hundred five billion, four hundred forty-four million, twenty-five thousand, five hundred thirty-nine".