80027043320381 has 16 divisors (see below), whose sum is σ = 87097585390704. Its totient is φ = 73222477185024.

The previous prime is 80027043320333. The next prime is 80027043320447. The reversal of 80027043320381 is 18302334072008.

It can be written as a sum of positive squares in 8 ways, for example, as 10210005996100 + 69817037324281 = 3195310^2 + 8355659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80027043320381 is a prime.

It is a super-2 number, since 2×80027043320381² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80027043320311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52572740 + ... + 54073533.

It is an arithmetic number, because the mean of its divisors is an integer number (5443599086919).

Almost surely, 2^{80027043320381} is an apocalyptic number.

It is an amenable number.

80027043320381 is a deficient number, since it is larger than the sum of its proper divisors (7070542070323).

80027043320381 is a wasteful number, since it uses less digits than its factorization.

80027043320381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106647520.

The product of its (nonzero) digits is 193536, while the sum is 41.

Adding to 80027043320381 its reverse (18302334072008), we get a palindrome (98329377392389).

The spelling of 80027043320381 in words is "eighty trillion, twenty-seven billion, forty-three million, three hundred twenty thousand, three hundred eighty-one".