405853478040 has 64 divisors (see below), whose sum is σ = 1250467486560. Its totient is φ = 105302522880.

The previous prime is 405853477969. The next prime is 405853478053. The reversal of 405853478040 is 40874358504.

405853478040 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45699781 + ... + 45708660.

Almost surely, 2^405853478040 is an apocalyptic number.

405853478040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405853478040 is an abundant number, since it is smaller than the sum of its proper divisors (844614008520).

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

405853478040 is a wasteful number, since it uses less digits than its factorization.

405853478040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91408492 (or 91408488 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 48.

The spelling of 405853478040 in words is "four hundred five billion, eight hundred fifty-three million, four hundred seventy-eight thousand, forty".