80040404040400 has 60 divisors (see below), whose sum is σ = 203608663118892. Its totient is φ = 30132857989120.

The previous prime is 80040404040367. The next prime is 80040404040409. The reversal of 80040404040400 is 404040404008.

It can be written as a sum of positive squares in 6 ways, for example, as 5410294608016 + 74630109432384 = 2326004^2 + 8638872^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80040404040409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5885317027 + ... + 5885330626.

Almost surely, 2^{80040404040400} is an apocalyptic number.

80040404040400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80040404040400 is an abundant number, since it is smaller than the sum of its proper divisors (123568259078492).

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

80040404040400 is a wasteful number, since it uses less digits than its factorization.

80040404040400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11770647688 (or 11770647677 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 80040404040400 its reverse (404040404008), we get a palindrome (80444444444408).

The spelling of 80040404040400 in words is "eighty trillion, forty billion, four hundred four million, forty thousand, four hundred".