80269939081 has 8 divisors (see below), whose sum is σ = 82459694024. Its totient is φ = 78081252480.

The previous prime is 80269939069. The next prime is 80269939093. The reversal of 80269939081 is 18093996208.

It is an interprime number because it is at equal distance from previous prime (80269939069) and next prime (80269939093).

It can be written as a sum of positive squares in 4 ways, for example, as 13395979081 + 66873960000 = 115741^2 + 258600^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80269939081 - 2⁵ = 80269939049 is a prime.

It is a super-2 number, since 2×80269939081² (a number of 23 digits) contains 22 as substring.

It is the 283320-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80269939381) by changing a digit.

It is a nontrivial repunit in base 283319.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113580 + ... + 416461.

It is an arithmetic number, because the mean of its divisors is an integer number (10307461753).

Almost surely, 2^80269939081 is an apocalyptic number.

80269939081 is the 151441-st nonagonal number.

It is an amenable number.

80269939081 is a deficient number, since it is larger than the sum of its proper divisors (2189754943).

80269939081 is a wasteful number, since it uses less digits than its factorization.

80269939081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534171.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The spelling of 80269939081 in words is "eighty billion, two hundred sixty-nine million, nine hundred thirty-nine thousand, eighty-one".