11666013405 has 16 divisors (see below), whose sum is σ = 18676311360. Its totient is φ = 6218310528.

The previous prime is 11666013353. The next prime is 11666013409. The reversal of 11666013405 is 50431066611.

It is not a de Polignac number, because 11666013405 - 2¹² = 11666009309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11666013409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195535 + ... + 248124.

It is an arithmetic number, because the mean of its divisors is an integer number (1167269460).

Almost surely, 2^11666013405 is an apocalyptic number.

11666013405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11666013405 is a deficient number, since it is larger than the sum of its proper divisors (7010297955).

11666013405 is a wasteful number, since it uses less digits than its factorization.

11666013405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445420.

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 11666013405 in words is "eleven billion, six hundred sixty-six million, thirteen thousand, four hundred five".