105662471887 has 8 divisors (see below), whose sum is σ = 120762119456. Its totient is φ = 90564076512.

The previous prime is 105662471867. The next prime is 105662471897. The reversal of 105662471887 is 788174266501.

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

It is a de Polignac number, because none of the positive numbers 2^k-105662471887 is a prime.

It is a super-2 number, since 2×105662471887² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105662471867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124668 + ... + 476305.

It is an arithmetic number, because the mean of its divisors is an integer number (15095264932).

Almost surely, 2^105662471887 is an apocalyptic number.

105662471887 is a deficient number, since it is larger than the sum of its proper divisors (15099647569).

105662471887 is an equidigital number, since it uses as much as digits as its factorization.

105662471887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626097.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 105662471887 in words is "one hundred five billion, six hundred sixty-two million, four hundred seventy-one thousand, eight hundred eighty-seven".