80481718249 has 9 divisors (see below), whose sum is σ = 80888015677. Its totient is φ = 80077455724.

The previous prime is 80481718171. The next prime is 80481718253. The reversal of 80481718249 is 94281718408.

The square root of 80481718249 is 283693.

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

It is not a de Polignac number, because 80481718249 - 2²⁷ = 80347500521 is a prime.

It is a super-2 number, since 2×80481718249² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80481718196 and 80481718205.

It is not an unprimeable number, because it can be changed into a prime (80481718949) 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, 67802034 + ... + 67803220.

Almost surely, 2^80481718249 is an apocalyptic number.

80481718249 is the 283693-rd square number.

80481718249 is the 141847-th centered octagonal number.

It is an amenable number.

80481718249 is a deficient number, since it is larger than the sum of its proper divisors (406297428).

80481718249 is an frugal number, since it uses more digits than its factorization.

80481718249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852 (or 1426 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 52.

The spelling of 80481718249 in words is "eighty billion, four hundred eighty-one million, seven hundred eighteen thousand, two hundred forty-nine".