80026721608226 has 4 divisors (see below), whose sum is σ = 120040082412342. Its totient is φ = 40013360804112.

The previous prime is 80026721608219. The next prime is 80026721608231. The reversal of 80026721608226 is 62280612762008.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 78552680370025 + 1474041238201 = 8862995^2 + 1214101^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20006680402055 + ... + 20006680402058.

Almost surely, 2^{80026721608226} is an apocalyptic number.

80026721608226 is a deficient number, since it is larger than the sum of its proper divisors (40013360804116).

80026721608226 is a wasteful number, since it uses less digits than its factorization.

80026721608226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40013360804115.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 80026721608226 in words is "eighty trillion, twenty-six billion, seven hundred twenty-one million, six hundred eight thousand, two hundred twenty-six".