80065531065 has 64 divisors (see below), whose sum is σ = 139831050240. Its totient is φ = 38882937600.

The previous prime is 80065530997. The next prime is 80065531067. The reversal of 80065531065 is 56013556008.

It is not a de Polignac number, because 80065531065 - 2⁹ = 80065530553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (80065531067) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28081890 + ... + 28084740.

It is an arithmetic number, because the mean of its divisors is an integer number (2184860160).

Almost surely, 2^80065531065 is an apocalyptic number.

It is an amenable number.

80065531065 is a deficient number, since it is larger than the sum of its proper divisors (59765519175).

80065531065 is a wasteful number, since it uses less digits than its factorization.

80065531065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4774.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 80065531065 in words is "eighty billion, sixty-five million, five hundred thirty-one thousand, sixty-five".