12164546461 has 2 divisors, whose sum is σ = 12164546462. Its totient is φ = 12164546460.

The previous prime is 12164546441. The next prime is 12164546477. The reversal of 12164546461 is 16464546121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10605086361 + 1559460100 = 102981^2 + 39490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12164546461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12164546441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6082273230 + 6082273231.

It is an arithmetic number, because the mean of its divisors is an integer number (6082273231).

Almost surely, 2^12164546461 is an apocalyptic number.

It is an amenable number.

12164546461 is a deficient number, since it is larger than the sum of its proper divisors (1).

12164546461 is an equidigital number, since it uses as much as digits as its factorization.

12164546461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 40.

The spelling of 12164546461 in words is "twelve billion, one hundred sixty-four million, five hundred forty-six thousand, four hundred sixty-one".