405023383656 has 48 divisors (see below), whose sum is σ = 1101728499300. Its totient is φ = 134418235392.

The previous prime is 405023383619. The next prime is 405023383717. The reversal of 405023383656 is 656383320504.

405023383656 is a `hidden beast` number, since 4 + 0 + 50 + 233 + 8 + 365 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 331672328100 + 73351055556 = 575910^2 + 270834^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12265881 + ... + 12298856.

Almost surely, 2^405023383656 is an apocalyptic number.

It is an amenable number.

405023383656 is an abundant number, since it is smaller than the sum of its proper divisors (696705115644).

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

405023383656 is a wasteful number, since it uses less digits than its factorization.

405023383656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24564978 (or 24564971 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 405023383656 in words is "four hundred five billion, twenty-three million, three hundred eighty-three thousand, six hundred fifty-six".