105544424457 has 12 divisors (see below), whose sum is σ = 155998478064. Its totient is φ = 68726601720.

The previous prime is 105544424423. The next prime is 105544424501. The reversal of 105544424457 is 754424445501.

105544424457 is a `hidden beast` number, since 1 + 0 + 554 + 4 + 4 + 2 + 44 + 57 = 666.

It is not a de Polignac number, because 105544424457 - 2⁸ = 105544424201 is a prime.

It is a super-2 number, since 2×105544424457² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (105544424057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136361919 + ... + 136362692.

It is an arithmetic number, because the mean of its divisors is an integer number (12999873172).

Almost surely, 2^105544424457 is an apocalyptic number.

It is an amenable number.

105544424457 is a deficient number, since it is larger than the sum of its proper divisors (50454053607).

105544424457 is a wasteful number, since it uses less digits than its factorization.

105544424457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272724660 (or 272724657 counting only the distinct ones).

The product of its (nonzero) digits is 1792000, while the sum is 45.

Adding to 105544424457 its reverse (754424445501), we get a palindrome (859968869958).

The spelling of 105544424457 in words is "one hundred five billion, five hundred forty-four million, four hundred twenty-four thousand, four hundred fifty-seven".