80911481 has 8 divisors (see below), whose sum is σ = 97337280. Its totient is φ = 65702448.

The previous prime is 80911459. The next prime is 80911499. The reversal of 80911481 is 18411908.

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

It is not a de Polignac number, because 80911481 - 2¹⁴ = 80895097 is a prime.

It is a super-2 number, since 2×80911481² = 13093335515226722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80911781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304046 + ... + 304311.

It is an arithmetic number, because the mean of its divisors is an integer number (12167160).

Almost surely, 2^80911481 is an apocalyptic number.

It is an amenable number.

80911481 is a deficient number, since it is larger than the sum of its proper divisors (16425799).

80911481 is a wasteful number, since it uses less digits than its factorization.

80911481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608383.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 80911481 is about 8995.0809334880. The cubic root of 80911481 is about 432.5172006925.

The spelling of 80911481 in words is "eighty million, nine hundred eleven thousand, four hundred eighty-one".