55685186497 has 2 divisors, whose sum is σ = 55685186498. Its totient is φ = 55685186496.

The previous prime is 55685186467. The next prime is 55685186549. The reversal of 55685186497 is 79468158655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35840547856 + 19844638641 = 189316^2 + 140871^2 .

It is a cyclic number.

It is not a de Polignac number, because 55685186497 - 2¹¹ = 55685184449 is a prime.

It is a super-2 number, since 2×55685186497² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55685186407) 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, 27842593248 + 27842593249.

It is an arithmetic number, because the mean of its divisors is an integer number (27842593249).

Almost surely, 2^55685186497 is an apocalyptic number.

It is an amenable number.

55685186497 is a deficient number, since it is larger than the sum of its proper divisors (1).

55685186497 is an equidigital number, since it uses as much as digits as its factorization.

55685186497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576000, while the sum is 64.

The spelling of 55685186497 in words is "fifty-five billion, six hundred eighty-five million, one hundred eighty-six thousand, four hundred ninety-seven".