80003556801 has 27 divisors (see below), whose sum is σ = 134437726371. Its totient is φ = 45712923984.

The previous prime is 80003556769. The next prime is 80003556811. The reversal of 80003556801 is 10865530008.

The square root of 80003556801 is 282849.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 50783073201 + 29220483600 = 225351^2 + 170940^2 .

It is not a de Polignac number, because 80003556801 - 2⁵ = 80003556769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80003556811) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5933095 + ... + 5946563.

Almost surely, 2^80003556801 is an apocalyptic number.

80003556801 is the 282849-th square number.

80003556801 is the 141425-th centered octagonal number.

It is an amenable number.

80003556801 is a deficient number, since it is larger than the sum of its proper divisors (54434169570).

80003556801 is an frugal number, since it uses more digits than its factorization.

80003556801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26958 (or 13479 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

Multiplying 80003556801 by its sum of digits (36), we get a square (2880128044836 = 1697094²).

It can be divided in two parts, 80003 and 556801, that added together give a square (636804 = 798²).

The spelling of 80003556801 in words is "eighty billion, three million, five hundred fifty-six thousand, eight hundred one".