405246378204 has 36 divisors (see below), whose sum is σ = 1068910738896. Its totient is φ = 129208989888.

The previous prime is 405246378197. The next prime is 405246378209. The reversal of 405246378204 is 402873642504.

It is a happy number.

405246378204 is a `hidden beast` number, since 4 + 0 + 5 + 2 + 4 + 637 + 8 + 2 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 405246378204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405246378209) by changing a digit.

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, 244713169 + ... + 244714824.

Almost surely, 2^405246378204 is an apocalyptic number.

It is an amenable number.

405246378204 is an abundant number, since it is smaller than the sum of its proper divisors (663664360692).

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

405246378204 is a wasteful number, since it uses less digits than its factorization.

405246378204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489428026 (or 489428021 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 45.

The spelling of 405246378204 in words is "four hundred five billion, two hundred forty-six million, three hundred seventy-eight thousand, two hundred four".