405163379232 has 72 divisors (see below), whose sum is σ = 1191913844940. Its totient is φ = 130397406720.

The previous prime is 405163379219. The next prime is 405163379333. The reversal of 405163379232 is 232973361504.

405163379232 is a `hidden beast` number, since 4 + 0 + 5 + 1 + 633 + 7 + 9 + 2 + 3 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 365449266576 + 39714112656 = 604524^2 + 199284^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24247119 + ... + 24263822.

Almost surely, 2^405163379232 is an apocalyptic number.

It is an amenable number.

405163379232 is an abundant number, since it is smaller than the sum of its proper divisors (786750465708).

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

405163379232 is a wasteful number, since it uses less digits than its factorization.

405163379232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48510986 (or 48510975 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The spelling of 405163379232 in words is "four hundred five billion, one hundred sixty-three million, three hundred seventy-nine thousand, two hundred thirty-two".