80221075917 has 4 divisors (see below), whose sum is σ = 106961434560. Its totient is φ = 53480717276.

The previous prime is 80221075859. The next prime is 80221075937. The reversal of 80221075917 is 71957012208.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80221075917 - 2⁷ = 80221075789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80221075937) 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, 13370179317 + ... + 13370179322.

It is an arithmetic number, because the mean of its divisors is an integer number (26740358640).

Almost surely, 2^80221075917 is an apocalyptic number.

It is an amenable number.

80221075917 is a deficient number, since it is larger than the sum of its proper divisors (26740358643).

80221075917 is a wasteful number, since it uses less digits than its factorization.

80221075917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26740358642.

The product of its (nonzero) digits is 70560, while the sum is 42.

The spelling of 80221075917 in words is "eighty billion, two hundred twenty-one million, seventy-five thousand, nine hundred seventeen".