80510122101509 has 4 divisors (see below), whose sum is σ = 80510526969516. Its totient is φ = 80509717233504.

The previous prime is 80510122101499. The next prime is 80510122101517. The reversal of 80510122101509 is 90510122101508.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55230313524100 + 25279808577409 = 7431710^2 + 5027903^2 .

It is a cyclic number.

It is not a de Polignac number, because 80510122101509 - 2¹² = 80510122097413 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 (80510122101559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202135574 + ... + 202533479.

It is an arithmetic number, because the mean of its divisors is an integer number (20127631742379).

Almost surely, 2^{80510122101509} is an apocalyptic number.

It is an amenable number.

80510122101509 is a deficient number, since it is larger than the sum of its proper divisors (404868007).

80510122101509 is a wasteful number, since it uses less digits than its factorization.

80510122101509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404868006.

The product of its (nonzero) digits is 7200, while the sum is 35.

Subtracting 80510122101509 from its reverse (90510122101508), we obtain a palindrome (9999999999999).

The spelling of 80510122101509 in words is "eighty trillion, five hundred ten billion, one hundred twenty-two million, one hundred one thousand, five hundred nine".