80194876969 has 9 divisors (see below), whose sum is σ = 82210458711. Its totient is φ = 78227576880.

The previous prime is 80194876967. The next prime is 80194876991. The reversal of 80194876969 is 96967849108.

The square root of 80194876969 is 283187.

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., 3864238569 + 76330638400 = 62163^2 + 276280^2 .

It is not a de Polignac number, because 80194876969 - 2¹ = 80194876967 is a prime.

It is a super-2 number, since 2×80194876969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80194876967) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11607214 + ... + 11614120.

Almost surely, 2^80194876969 is an apocalyptic number.

80194876969 is the 283187-th square number.

80194876969 is the 141594-th centered octagonal number.

It is an amenable number.

80194876969 is a deficient number, since it is larger than the sum of its proper divisors (2015581742).

80194876969 is an frugal number, since it uses more digits than its factorization.

80194876969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13896 (or 6948 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 67.

The spelling of 80194876969 in words is "eighty billion, one hundred ninety-four million, eight hundred seventy-six thousand, nine hundred sixty-nine".