105487221765 has 8 divisors (see below), whose sum is σ = 168779554848. Its totient is φ = 56259851600.

The previous prime is 105487221751. The next prime is 105487221773. The reversal of 105487221765 is 567122784501.

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

It is not a de Polignac number, because 105487221765 - 2¹² = 105487217669 is a prime.

It is a super-2 number, since 2×105487221765² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3516240711 + ... + 3516240740.

It is an arithmetic number, because the mean of its divisors is an integer number (21097444356).

Almost surely, 2^105487221765 is an apocalyptic number.

105487221765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105487221765 is a deficient number, since it is larger than the sum of its proper divisors (63292333083).

105487221765 is an equidigital number, since it uses as much as digits as its factorization.

105487221765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7032481459.

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 105487221765 in words is "one hundred five billion, four hundred eighty-seven million, two hundred twenty-one thousand, seven hundred sixty-five".