105005620052057 has 4 divisors (see below), whose sum is σ = 105008744044260. Its totient is φ = 105002496059856.

The previous prime is 105005620052023. The next prime is 105005620052063. The reversal of 105005620052057 is 750250026500501.

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 68038016202256 + 36967603849801 = 8248516^2 + 6080099^2 .

It is a cyclic number.

It is not a de Polignac number, because 105005620052057 - 2¹² = 105005620047961 is a prime.

It is a super-2 number, since 2×105005620052057² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105005620052057.

It is not an unprimeable number, because it can be changed into a prime (105005620052257) 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, 1561945682 + ... + 1562012907.

It is an arithmetic number, because the mean of its divisors is an integer number (26252186011065).

Almost surely, 2^{105005620052057} is an apocalyptic number.

It is an amenable number.

105005620052057 is a deficient number, since it is larger than the sum of its proper divisors (3123992203).

105005620052057 is an equidigital number, since it uses as much as digits as its factorization.

105005620052057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3123992202.

The product of its (nonzero) digits is 105000, while the sum is 38.

Adding to 105005620052057 its reverse (750250026500501), we get a palindrome (855255646552558).

The spelling of 105005620052057 in words is "one hundred five trillion, five billion, six hundred twenty million, fifty-two thousand, fifty-seven".