64065645164031 has 16 divisors (see below), whose sum is σ = 98188139910144. Its totient is φ = 36397327721184.

The previous prime is 64065645164029. The next prime is 64065645164141. The reversal of 64065645164031 is 13046154656046.

It is not a de Polignac number, because 64065645164031 - 2¹ = 64065645164029 is a prime.

It is a super-2 number, since 2×64065645164031² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64065645164531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8817178471 + ... + 8817185736.

It is an arithmetic number, because the mean of its divisors is an integer number (6136758744384).

Almost surely, 2^{64065645164031} is an apocalyptic number.

64065645164031 is a deficient number, since it is larger than the sum of its proper divisors (34122494746113).

64065645164031 is a wasteful number, since it uses less digits than its factorization.

64065645164031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17634364390.

The product of its (nonzero) digits is 6220800, while the sum is 51.

The spelling of 64065645164031 in words is "sixty-four trillion, sixty-five billion, six hundred forty-five million, one hundred sixty-four thousand, thirty-one".