80897565011 has 2 divisors, whose sum is σ = 80897565012. Its totient is φ = 80897565010.

The previous prime is 80897564987. The next prime is 80897565017. The reversal of 80897565011 is 11056579808.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80897565011 is a prime.

It is not a weakly prime, because it can be changed into another prime (80897565017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40448782505 + 40448782506.

It is an arithmetic number, because the mean of its divisors is an integer number (40448782506).

Almost surely, 2^80897565011 is an apocalyptic number.

80897565011 is a deficient number, since it is larger than the sum of its proper divisors (1).

80897565011 is an equidigital number, since it uses as much as digits as its factorization.

80897565011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 50.

The spelling of 80897565011 in words is "eighty billion, eight hundred ninety-seven million, five hundred sixty-five thousand, eleven".