4131601913861 has 2 divisors, whose sum is σ = 4131601913862. Its totient is φ = 4131601913860.

The previous prime is 4131601913827. The next prime is 4131601913863. The reversal of 4131601913861 is 1683191061314.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2413654316836 + 1717947597025 = 1553594^2 + 1310705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4131601913861 is a prime.

Together with 4131601913863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4131601913863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2065800956930 + 2065800956931.

It is an arithmetic number, because the mean of its divisors is an integer number (2065800956931).

Almost surely, 2^{4131601913861} is an apocalyptic number.

It is an amenable number.

4131601913861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4131601913861 is an equidigital number, since it uses as much as digits as its factorization.

4131601913861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 4131601913861 in words is "four trillion, one hundred thirty-one billion, six hundred one million, nine hundred thirteen thousand, eight hundred sixty-one".