80657072063 has 16 divisors (see below), whose sum is σ = 84865773600. Its totient is φ = 76545329280.

The previous prime is 80657072057. The next prime is 80657072077. The reversal of 80657072063 is 36027075608.

It is a cyclic number.

It is not a de Polignac number, because 80657072063 - 2¹⁰ = 80657071039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80657062063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2625848 + ... + 2656386.

It is an arithmetic number, because the mean of its divisors is an integer number (5304110850).

Almost surely, 2^80657072063 is an apocalyptic number.

80657072063 is a deficient number, since it is larger than the sum of its proper divisors (4208701537).

80657072063 is a wasteful number, since it uses less digits than its factorization.

80657072063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32122.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 80657072063 in words is "eighty billion, six hundred fifty-seven million, seventy-two thousand, sixty-three".