11604456405 has 12 divisors (see below), whose sum is σ = 20114391180. Its totient is φ = 6189043392.

The previous prime is 11604456379. The next prime is 11604456419. The reversal of 11604456405 is 50465440611.

11604456405 is a `hidden beast` number, since 1 + 1 + 6 + 0 + 4 + 4 + 5 + 640 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4966443729 + 6638012676 = 70473^2 + 81474^2 .

It is not a de Polignac number, because 11604456405 - 2⁵ = 11604456373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11604456405.

It is a congruent number.

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, 128938360 + ... + 128938449.

It is an arithmetic number, because the mean of its divisors is an integer number (1676199265).

Almost surely, 2^11604456405 is an apocalyptic number.

11604456405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11604456405 is a deficient number, since it is larger than the sum of its proper divisors (8509934775).

11604456405 is a wasteful number, since it uses less digits than its factorization.

11604456405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257876820 (or 257876817 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 11604456405 in words is "eleven billion, six hundred four million, four hundred fifty-six thousand, four hundred five".