55665265841 has 2 divisors, whose sum is σ = 55665265842. Its totient is φ = 55665265840.

The previous prime is 55665265837. The next prime is 55665265867. The reversal of 55665265841 is 14856256655.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54104620816 + 1560645025 = 232604^2 + 39505^2 .

It is a cyclic number.

It is not a de Polignac number, because 55665265841 - 2² = 55665265837 is a prime.

It is a super-2 number, since 2×55665265841² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55665265811) 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, 27832632920 + 27832632921.

It is an arithmetic number, because the mean of its divisors is an integer number (27832632921).

Almost surely, 2^55665265841 is an apocalyptic number.

It is an amenable number.

55665265841 is a deficient number, since it is larger than the sum of its proper divisors (1).

55665265841 is an equidigital number, since it uses as much as digits as its factorization.

55665265841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640000, while the sum is 53.

The spelling of 55665265841 in words is "fifty-five billion, six hundred sixty-five million, two hundred sixty-five thousand, eight hundred forty-one".