12170597649 has 32 divisors (see below), whose sum is σ = 20194944000. Its totient is φ = 6361395264.

The previous prime is 12170597641. The next prime is 12170597669. The reversal of 12170597649 is 94679507121.

It is not a de Polignac number, because 12170597649 - 2³ = 12170597641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12170597641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 514339 + ... + 537480.

It is an arithmetic number, because the mean of its divisors is an integer number (631092000).

Almost surely, 2^12170597649 is an apocalyptic number.

12170597649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12170597649 is a deficient number, since it is larger than the sum of its proper divisors (8024346351).

12170597649 is a wasteful number, since it uses less digits than its factorization.

12170597649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051877.

The product of its (nonzero) digits is 952560, while the sum is 51.

The spelling of 12170597649 in words is "twelve billion, one hundred seventy million, five hundred ninety-seven thousand, six hundred forty-nine".