55887846961 has 2 divisors, whose sum is σ = 55887846962. Its totient is φ = 55887846960.

The previous prime is 55887846887. The next prime is 55887846967. The reversal of 55887846961 is 16964878855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51690750736 + 4197096225 = 227356^2 + 64785^2 .

It is a cyclic number.

It is not a de Polignac number, because 55887846961 - 2⁹ = 55887846449 is a prime.

It is not a weakly prime, because it can be changed into another prime (55887846967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27943923480 + 27943923481.

It is an arithmetic number, because the mean of its divisors is an integer number (27943923481).

Almost surely, 2^55887846961 is an apocalyptic number.

It is an amenable number.

55887846961 is a deficient number, since it is larger than the sum of its proper divisors (1).

55887846961 is an equidigital number, since it uses as much as digits as its factorization.

55887846961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116121600, while the sum is 67.

The spelling of 55887846961 in words is "fifty-five billion, eight hundred eighty-seven million, eight hundred forty-six thousand, nine hundred sixty-one".