80921237297 has 8 divisors (see below), whose sum is σ = 83715983400. Its totient is φ = 78126781824.

The previous prime is 80921237281. The next prime is 80921237323. The reversal of 80921237297 is 79273212908.

It can be written as a sum of positive squares in 4 ways, for example, as 58901348416 + 22019888881 = 242696^2 + 148391^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80921237297 - 2⁴ = 80921237281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80921237597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599279 + ... + 721787.

It is an arithmetic number, because the mean of its divisors is an integer number (10464497925).

Almost surely, 2^80921237297 is an apocalyptic number.

It is an amenable number.

80921237297 is a deficient number, since it is larger than the sum of its proper divisors (2794746103).

80921237297 is a wasteful number, since it uses less digits than its factorization.

80921237297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145315.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 80921237297 in words is "eighty billion, nine hundred twenty-one million, two hundred thirty-seven thousand, two hundred ninety-seven".