105672644545 has 8 divisors (see below), whose sum is σ = 136561571496. Its totient is φ = 78035183616.

The previous prime is 105672644531. The next prime is 105672644549. The reversal of 105672644545 is 545446276501.

It can be written as a sum of positive squares in 4 ways, for example, as 712195969 + 104960448576 = 26687^2 + 323976^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105672644545 - 2⁵ = 105672644513 is a prime.

It is a super-2 number, since 2×105672644545² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105672644549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 812866432 + ... + 812866561.

It is an arithmetic number, because the mean of its divisors is an integer number (17070196437).

Almost surely, 2^105672644545 is an apocalyptic number.

It is an amenable number.

105672644545 is a deficient number, since it is larger than the sum of its proper divisors (30888926951).

105672644545 is a wasteful number, since it uses less digits than its factorization.

105672644545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625733011.

The product of its (nonzero) digits is 4032000, while the sum is 49.

The spelling of 105672644545 in words is "one hundred five billion, six hundred seventy-two million, six hundred forty-four thousand, five hundred forty-five".