80720223401 has 4 divisors (see below), whose sum is σ = 80842342404. Its totient is φ = 80598104400.

The previous prime is 80720223379. The next prime is 80720223431. The reversal of 80720223401 is 10432202708.

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 32480690176 + 48239533225 = 180224^2 + 219635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80720223401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80720223431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61058510 + ... + 61059831.

It is an arithmetic number, because the mean of its divisors is an integer number (20210585601).

Almost surely, 2^80720223401 is an apocalyptic number.

It is an amenable number.

80720223401 is a deficient number, since it is larger than the sum of its proper divisors (122119003).

80720223401 is a wasteful number, since it uses less digits than its factorization.

80720223401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122119002.

The product of its (nonzero) digits is 5376, while the sum is 29.

The spelling of 80720223401 in words is "eighty billion, seven hundred twenty million, two hundred twenty-three thousand, four hundred one".