405072408508 has 12 divisors (see below), whose sum is σ = 715501731672. Its totient is φ = 200643342320.

The previous prime is 405072408487. The next prime is 405072408509. The reversal of 405072408508 is 805804270504.

It is a happy number.

It is a super-2 number, since 2×405072408508² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405072408509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473215003 + ... + 473215858.

It is an arithmetic number, because the mean of its divisors is an integer number (59625144306).

Almost surely, 2^405072408508 is an apocalyptic number.

It is an amenable number.

405072408508 is a deficient number, since it is larger than the sum of its proper divisors (310429323164).

405072408508 is a wasteful number, since it uses less digits than its factorization.

405072408508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946430972 (or 946430970 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 43.

The spelling of 405072408508 in words is "four hundred five billion, seventy-two million, four hundred eight thousand, five hundred eight".