80971405111 has 2 divisors, whose sum is σ = 80971405112. Its totient is φ = 80971405110.

The previous prime is 80971405069. The next prime is 80971405147. The reversal of 80971405111 is 11150417908.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80971405111 - 2²¹ = 80969307959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80971405211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40485702555 + 40485702556.

It is an arithmetic number, because the mean of its divisors is an integer number (40485702556).

Almost surely, 2^80971405111 is an apocalyptic number.

80971405111 is a deficient number, since it is larger than the sum of its proper divisors (1).

80971405111 is an equidigital number, since it uses as much as digits as its factorization.

80971405111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 37.

The spelling of 80971405111 in words is "eighty billion, nine hundred seventy-one million, four hundred five thousand, one hundred eleven".