80720940043 has 2 divisors, whose sum is σ = 80720940044. Its totient is φ = 80720940042.

The previous prime is 80720940007. The next prime is 80720940059. The reversal of 80720940043 is 34004902708.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80720940043 - 2²¹ = 80718842891 is a prime.

It is a super-2 number, since 2×80720940043² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80720939984 and 80720940011.

It is not a weakly prime, because it can be changed into another prime (80720940943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40360470021 + 40360470022.

It is an arithmetic number, because the mean of its divisors is an integer number (40360470022).

Almost surely, 2^80720940043 is an apocalyptic number.

80720940043 is a deficient number, since it is larger than the sum of its proper divisors (1).

80720940043 is an equidigital number, since it uses as much as digits as its factorization.

80720940043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 80720940043 in words is "eighty billion, seven hundred twenty million, nine hundred forty thousand, forty-three".