408873539640 has 32 divisors (see below), whose sum is σ = 1226620619280. Its totient is φ = 109032943872.

The previous prime is 408873539533. The next prime is 408873539647. The reversal of 408873539640 is 46935378804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408873539647) 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, 1703639629 + ... + 1703639868.

Almost surely, 2^408873539640 is an apocalyptic number.

408873539640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

408873539640 is an abundant number, since it is smaller than the sum of its proper divisors (817747079640).

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

408873539640 is a wasteful number, since it uses less digits than its factorization.

408873539640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407279511 (or 3407279507 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 57.

The spelling of 408873539640 in words is "four hundred eight billion, eight hundred seventy-three million, five hundred thirty-nine thousand, six hundred forty".