65555360131 has 2 divisors, whose sum is σ = 65555360132. Its totient is φ = 65555360130.

The previous prime is 65555360107. The next prime is 65555360149. The reversal of 65555360131 is 13106355556.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65555360131 - 2⁵ = 65555360099 is a prime.

It is a super-2 number, since 2×65555360131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65555360161) 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, 32777680065 + 32777680066.

It is an arithmetic number, because the mean of its divisors is an integer number (32777680066).

Almost surely, 2^65555360131 is an apocalyptic number.

65555360131 is a deficient number, since it is larger than the sum of its proper divisors (1).

65555360131 is an equidigital number, since it uses as much as digits as its factorization.

65555360131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 202500, while the sum is 40.

The spelling of 65555360131 in words is "sixty-five billion, five hundred fifty-five million, three hundred sixty thousand, one hundred thirty-one".