65555015131 has 2 divisors, whose sum is σ = 65555015132. Its totient is φ = 65555015130.

The previous prime is 65555015089. The next prime is 65555015143. The reversal of 65555015131 is 13151055556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65555015131 - 2⁷ = 65555015003 is a prime.

It is a super-2 number, since 2×65555015131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65555015161) 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, 32777507565 + 32777507566.

It is an arithmetic number, because the mean of its divisors is an integer number (32777507566).

Almost surely, 2^65555015131 is an apocalyptic number.

65555015131 is a deficient number, since it is larger than the sum of its proper divisors (1).

65555015131 is an equidigital number, since it uses as much as digits as its factorization.

65555015131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56250, while the sum is 37.

The spelling of 65555015131 in words is "sixty-five billion, five hundred fifty-five million, fifteen thousand, one hundred thirty-one".