80421147841 has 4 divisors (see below), whose sum is σ = 83194290900. Its totient is φ = 77648004784.

The previous prime is 80421147839. The next prime is 80421147857. The reversal of 80421147841 is 14874112408.

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 61078179600 + 19342968241 = 247140^2 + 139079^2 .

It is a cyclic number.

It is not a de Polignac number, because 80421147841 - 2¹ = 80421147839 is a prime.

It is a super-2 number, since 2×80421147841² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80421147794 and 80421147803.

It is not an unprimeable number, because it can be changed into a prime (80421147041) 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, 1386571486 + ... + 1386571543.

It is an arithmetic number, because the mean of its divisors is an integer number (20798572725).

Almost surely, 2^80421147841 is an apocalyptic number.

It is an amenable number.

80421147841 is a deficient number, since it is larger than the sum of its proper divisors (2773143059).

80421147841 is a wasteful number, since it uses less digits than its factorization.

80421147841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773143058.

The product of its (nonzero) digits is 57344, while the sum is 40.

The spelling of 80421147841 in words is "eighty billion, four hundred twenty-one million, one hundred forty-seven thousand, eight hundred forty-one".