65688015145 has 16 divisors (see below), whose sum is σ = 83011176000. Its totient is φ = 49762496448.

The previous prime is 65688015139. The next prime is 65688015163. The reversal of 65688015145 is 54151088656.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 65688015145 - 2¹⁵ = 65687982377 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 63186 + ... + 367924.

It is an arithmetic number, because the mean of its divisors is an integer number (5188198500).

Almost surely, 2^65688015145 is an apocalyptic number.

It is an amenable number.

65688015145 is a deficient number, since it is larger than the sum of its proper divisors (17323160855).

65688015145 is a wasteful number, since it uses less digits than its factorization.

65688015145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307032.

The product of its (nonzero) digits is 1152000, while the sum is 49.

The spelling of 65688015145 in words is "sixty-five billion, six hundred eighty-eight million, fifteen thousand, one hundred forty-five".