80894005540 has 24 divisors (see below), whose sum is σ = 171628729272. Its totient is φ = 32024017920.

The previous prime is 80894005529. The next prime is 80894005547. The reversal of 80894005540 is 4550049808.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24943780096 + 55950225444 = 157936^2 + 236538^2 .

It is not an unprimeable number, because it can be changed into a prime (80894005547) 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, 20847031 + ... + 20850910.

It is an arithmetic number, because the mean of its divisors is an integer number (7151197053).

Almost surely, 2^80894005540 is an apocalyptic number.

It is an amenable number.

80894005540 is an abundant number, since it is smaller than the sum of its proper divisors (90734723732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80894005540 is a wasteful number, since it uses less digits than its factorization.

80894005540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41698047 (or 41698045 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 80894005540 in words is "eighty billion, eight hundred ninety-four million, five thousand, five hundred forty".