11666126215 has 8 divisors (see below), whose sum is σ = 14123240208. Its totient is φ = 9250308480.

The previous prime is 11666126209. The next prime is 11666126221. The reversal of 11666126215 is 51262166611.

It is an interprime number because it is at equal distance from previous prime (11666126209) and next prime (11666126221).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11666126215 - 2³ = 11666126207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10323441 + ... + 10324570.

It is an arithmetic number, because the mean of its divisors is an integer number (1765405026).

Almost surely, 2^11666126215 is an apocalyptic number.

11666126215 is a deficient number, since it is larger than the sum of its proper divisors (2457113993).

11666126215 is a wasteful number, since it uses less digits than its factorization.

11666126215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20648129.

The product of its digits is 25920, while the sum is 37.

The spelling of 11666126215 in words is "eleven billion, six hundred sixty-six million, one hundred twenty-six thousand, two hundred fifteen".