105861539522 has 4 divisors (see below), whose sum is σ = 158792309286. Its totient is φ = 52930769760.

The previous prime is 105861539521. The next prime is 105861539533. The reversal of 105861539522 is 225935168501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225935168501 = 7 ⋅32276452643.

It can be written as a sum of positive squares in only one way, i.e., 94937318161 + 10924221361 = 308119^2 + 104519^2 .

It is a super-2 number, since 2×105861539522² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105861539521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26465384879 + ... + 26465384882.

Almost surely, 2^105861539522 is an apocalyptic number.

105861539522 is a deficient number, since it is larger than the sum of its proper divisors (52930769764).

105861539522 is an equidigital number, since it uses as much as digits as its factorization.

105861539522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52930769763.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 105861539522 in words is "one hundred five billion, eight hundred sixty-one million, five hundred thirty-nine thousand, five hundred twenty-two".