4955494496861 has 2 divisors, whose sum is σ = 4955494496862. Its totient is φ = 4955494496860.

The previous prime is 4955494496809. The next prime is 4955494496893. The reversal of 4955494496861 is 1686944945594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4955494496836 + 25 = 2226094^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 4955494496861 - 2¹⁴ = 4955494480477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4955494496801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2477747248430 + 2477747248431.

It is an arithmetic number, because the mean of its divisors is an integer number (2477747248431).

Almost surely, 2^{4955494496861} is an apocalyptic number.

It is an amenable number.

4955494496861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4955494496861 is an equidigital number, since it uses as much as digits as its factorization.

4955494496861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1343692800, while the sum is 74.

The spelling of 4955494496861 in words is "four trillion, nine hundred fifty-five billion, four hundred ninety-four million, four hundred ninety-six thousand, eight hundred sixty-one".