40408404080 has 80 divisors (see below), whose sum is σ = 102521973888. Its totient is φ = 14689440000.

The previous prime is 40408404053. The next prime is 40408404089. The reversal of 40408404080 is 8040480404.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40408404089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4440335 + ... + 4449425.

Almost surely, 2^40408404080 is an apocalyptic number.

40408404080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40408404080 is an abundant number, since it is smaller than the sum of its proper divisors (62113569808).

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

40408404080 is a wasteful number, since it uses less digits than its factorization.

40408404080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14166 (or 14160 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

Adding to 40408404080 its reverse (8040480404), we get a palindrome (48448884484).

The spelling of 40408404080 in words is "forty billion, four hundred eight million, four hundred four thousand, eighty".