105254145545 has 4 divisors (see below), whose sum is σ = 126304974660. Its totient is φ = 84203316432.

The previous prime is 105254145541. The next prime is 105254145631. The reversal of 105254145545 is 545541452501.

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 49094151184 + 56159994361 = 221572^2 + 236981^2 .

It is a cyclic number.

It is not a de Polignac number, because 105254145545 - 2² = 105254145541 is a prime.

It is a super-2 number, since 2×105254145545² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105254145541) 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, 10525414550 + ... + 10525414559.

It is an arithmetic number, because the mean of its divisors is an integer number (31576243665).

Almost surely, 2^105254145545 is an apocalyptic number.

It is an amenable number.

105254145545 is a deficient number, since it is larger than the sum of its proper divisors (21050829115).

105254145545 is an equidigital number, since it uses as much as digits as its factorization.

105254145545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21050829114.

The product of its (nonzero) digits is 400000, while the sum is 41.

The spelling of 105254145545 in words is "one hundred five billion, two hundred fifty-four million, one hundred forty-five thousand, five hundred forty-five".