11660617277 has 4 divisors (see below), whose sum is σ = 11660842620. Its totient is φ = 11660391936.

The previous prime is 11660617261. The next prime is 11660617307. The reversal of 11660617277 is 77271606611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 863536996 + 10797080281 = 29386^2 + 103909^2 .

It is a cyclic number.

It is not a de Polignac number, because 11660617277 - 2⁴ = 11660617261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11660617777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8099 + ... + 152927.

It is an arithmetic number, because the mean of its divisors is an integer number (2915210655).

Almost surely, 2^11660617277 is an apocalyptic number.

It is an amenable number.

11660617277 is a deficient number, since it is larger than the sum of its proper divisors (225343).

11660617277 is an equidigital number, since it uses as much as digits as its factorization.

11660617277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225342.

The product of its (nonzero) digits is 148176, while the sum is 44.

The spelling of 11660617277 in words is "eleven billion, six hundred sixty million, six hundred seventeen thousand, two hundred seventy-seven".