12197057465881 has 8 divisors (see below), whose sum is σ = 12324437775720. Its totient is φ = 12069710573568.

The previous prime is 12197057465869. The next prime is 12197057465903. The reversal of 12197057465881 is 18856475079121.

12197057465881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 112013379856 + 12085044086025 = 334684^2 + 3476355^2 .

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-12197057465881 is a prime.

It is a super-2 number, since 2×12197057465881² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12197057465821) 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, 7620256 + ... + 9080881.

It is an arithmetic number, because the mean of its divisors is an integer number (1540554721965).

Almost surely, 2^{12197057465881} is an apocalyptic number.

It is an amenable number.

12197057465881 is a deficient number, since it is larger than the sum of its proper divisors (127380309839).

12197057465881 is an equidigital number, since it uses as much as digits as its factorization.

12197057465881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16708763.

The product of its (nonzero) digits is 33868800, while the sum is 64.

The spelling of 12197057465881 in words is "twelve trillion, one hundred ninety-seven billion, fifty-seven million, four hundred sixty-five thousand, eight hundred eighty-one".