12175005649 has 16 divisors (see below), whose sum is σ = 13284072000. Its totient is φ = 11114349120.

The previous prime is 12175005643. The next prime is 12175005673. The reversal of 12175005649 is 94650057121.

It is a cyclic number.

It is not a de Polignac number, because 12175005649 - 2⁹ = 12175005137 is a prime.

It is a super-2 number, since 2×12175005649² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12175005643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258754 + ... + 302164.

It is an arithmetic number, because the mean of its divisors is an integer number (830254500).

Almost surely, 2^12175005649 is an apocalyptic number.

12175005649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12175005649 is a deficient number, since it is larger than the sum of its proper divisors (1109066351).

12175005649 is a wasteful number, since it uses less digits than its factorization.

12175005649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43968.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 12175005649 in words is "twelve billion, one hundred seventy-five million, five thousand, six hundred forty-nine".