10005549605 has 4 divisors (see below), whose sum is σ = 12006659532. Its totient is φ = 8004439680.

The previous prime is 10005549577. The next prime is 10005549611. The reversal of 10005549605 is 50694550001.

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 6980769601 + 3024780004 = 83551^2 + 54998^2 .

It is not a de Polignac number, because 10005549605 - 2¹⁴ = 10005533221 is a prime.

It is a super-2 number, since 2×10005549605² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000554956 + ... + 1000554965.

It is an arithmetic number, because the mean of its divisors is an integer number (3001664883).

Almost surely, 2^10005549605 is an apocalyptic number.

It is an amenable number.

10005549605 is a deficient number, since it is larger than the sum of its proper divisors (2001109927).

10005549605 is an equidigital number, since it uses as much as digits as its factorization.

10005549605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001109926.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 10005549605 in words is "ten billion, five million, five hundred forty-nine thousand, six hundred five".