8081400005 has 32 divisors (see below), whose sum is σ = 11356882944. Its totient is φ = 5404988736.

The previous prime is 8081399959. The next prime is 8081400011. The reversal of 8081400005 is 5000041808.

It is not a de Polignac number, because 8081400005 - 2²² = 8077205701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1181024 + ... + 1187846.

It is an arithmetic number, because the mean of its divisors is an integer number (354902592).

Almost surely, 2^8081400005 is an apocalyptic number.

It is an amenable number.

8081400005 is a deficient number, since it is larger than the sum of its proper divisors (3275482939).

8081400005 is a wasteful number, since it uses less digits than its factorization.

8081400005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7665.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 8081400005 is about 89896.6073052815. The cubic root of 8081400005 is about 2006.7604561183.

The spelling of 8081400005 in words is "eight billion, eighty-one million, four hundred thousand, five".