10645222887605 has 4 divisors (see below), whose sum is σ = 12774267465132. Its totient is φ = 8516178310080.

The previous prime is 10645222887601. The next prime is 10645222887631. The reversal of 10645222887605 is 50678822254601.

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 2917940407204 + 7727282480401 = 1708198^2 + 2779799^2 .

It is not a de Polignac number, because 10645222887605 - 2² = 10645222887601 is a prime.

It is a super-2 number, since 2×10645222887605² (a number of 27 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 (10645222887601) 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, 1064522288756 + ... + 1064522288765.

It is an arithmetic number, because the mean of its divisors is an integer number (3193566866283).

Almost surely, 2^{10645222887605} is an apocalyptic number.

It is an amenable number.

10645222887605 is a deficient number, since it is larger than the sum of its proper divisors (2129044577527).

10645222887605 is an equidigital number, since it uses as much as digits as its factorization.

10645222887605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129044577526.

The product of its (nonzero) digits is 12902400, while the sum is 56.

The spelling of 10645222887605 in words is "ten trillion, six hundred forty-five billion, two hundred twenty-two million, eight hundred eighty-seven thousand, six hundred five".