405066805240 has 16 divisors (see below), whose sum is σ = 911400311880. Its totient is φ = 162026722080.

The previous prime is 405066805229. The next prime is 405066805327. The reversal of 405066805240 is 42508660504.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 10126670131 = 405066805240 / (4 + 0 + 5 + 0 + 6 + 6 + 8 + 0 + 5 + 2 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 405066805193 and 405066805202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5063335026 + ... + 5063335105.

Almost surely, 2^405066805240 is an apocalyptic number.

405066805240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405066805240 is an abundant number, since it is smaller than the sum of its proper divisors (506333506640).

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

405066805240 is a wasteful number, since it uses less digits than its factorization.

405066805240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10126670142 (or 10126670138 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 405066805240 in words is "four hundred five billion, sixty-six million, eight hundred five thousand, two hundred forty".