405438305136 has 40 divisors (see below), whose sum is σ = 1047488797200. Its totient is φ = 135132358656.

The previous prime is 405438305123. The next prime is 405438305137. The reversal of 405438305136 is 631503834504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405438305137) 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 7 ways as a sum of consecutive naturals, for example, 53056 + ... + 902048.

It is an arithmetic number, because the mean of its divisors is an integer number (26187219930).

Almost surely, 2^405438305136 is an apocalyptic number.

It is an amenable number.

405438305136 is an abundant number, since it is smaller than the sum of its proper divisors (642050492064).

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

405438305136 is a wasteful number, since it uses less digits than its factorization.

405438305136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858953 (or 858947 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 405438305136 in words is "four hundred five billion, four hundred thirty-eight million, three hundred five thousand, one hundred thirty-six".