105520573478 has 4 divisors (see below), whose sum is σ = 158280860220. Its totient is φ = 52760286738.

The previous prime is 105520573447. The next prime is 105520573481. The reversal of 105520573478 is 874375025501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 874375025501 = 128411 ⋅6809191.

It is a super-2 number, since 2×105520573478² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26380143368 + ... + 26380143371.

It is an arithmetic number, because the mean of its divisors is an integer number (39570215055).

Almost surely, 2^105520573478 is an apocalyptic number.

105520573478 is a deficient number, since it is larger than the sum of its proper divisors (52760286742).

105520573478 is an equidigital number, since it uses as much as digits as its factorization.

105520573478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52760286741.

The product of its (nonzero) digits is 1176000, while the sum is 47.

Adding to 105520573478 its reverse (874375025501), we get a palindrome (979895598979).

The spelling of 105520573478 in words is "one hundred five billion, five hundred twenty million, five hundred seventy-three thousand, four hundred seventy-eight".