80838378321 has 4 divisors (see below), whose sum is σ = 107784504432. Its totient is φ = 53892252212.

The previous prime is 80838378317. The next prime is 80838378343. The reversal of 80838378321 is 12387383808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80838378321 - 2² = 80838378317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80838378371) 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, 13473063051 + ... + 13473063056.

It is an arithmetic number, because the mean of its divisors is an integer number (26946126108).

Almost surely, 2^80838378321 is an apocalyptic number.

It is an amenable number.

80838378321 is a deficient number, since it is larger than the sum of its proper divisors (26946126111).

80838378321 is a wasteful number, since it uses less digits than its factorization.

80838378321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26946126110.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 80838378321 in words is "eighty billion, eight hundred thirty-eight million, three hundred seventy-eight thousand, three hundred twenty-one".