80221511633 has 4 divisors (see below), whose sum is σ = 84940424100. Its totient is φ = 75502599168.

The previous prime is 80221511533. The next prime is 80221511651. The reversal of 80221511633 is 33611512208.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46831989649 + 33389521984 = 216407^2 + 182728^2 .

It is a cyclic number.

It is not a de Polignac number, because 80221511633 - 2¹² = 80221507537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80221511633.

It is not an unprimeable number, because it can be changed into a prime (80221511533) 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, 2359456208 + ... + 2359456241.

It is an arithmetic number, because the mean of its divisors is an integer number (21235106025).

Almost surely, 2^80221511633 is an apocalyptic number.

It is an amenable number.

80221511633 is a deficient number, since it is larger than the sum of its proper divisors (4718912467).

80221511633 is a wasteful number, since it uses less digits than its factorization.

80221511633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4718912466.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 80221511633 in words is "eighty billion, two hundred twenty-one million, five hundred eleven thousand, six hundred thirty-three".