12405311197 has 8 divisors (see below), whose sum is σ = 12821746136. Its totient is φ = 11993147712.

The previous prime is 12405311141. The next prime is 12405311221. The reversal of 12405311197 is 79111350421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5682295161 + 6723016036 = 75381^2 + 81994^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12405311197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12405311117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1061958 + ... + 1073575.

It is an arithmetic number, because the mean of its divisors is an integer number (1602718267).

Almost surely, 2^12405311197 is an apocalyptic number.

It is an amenable number.

12405311197 is a deficient number, since it is larger than the sum of its proper divisors (416434939).

12405311197 is a wasteful number, since it uses less digits than its factorization.

12405311197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135727.

The product of its (nonzero) digits is 7560, while the sum is 34.

The spelling of 12405311197 in words is "twelve billion, four hundred five million, three hundred eleven thousand, one hundred ninety-seven".