11665271377 has 16 divisors (see below), whose sum is σ = 12054585600. Its totient is φ = 11283517440.

The previous prime is 11665271357. The next prime is 11665271393. The reversal of 11665271377 is 77317256611.

It is a cyclic number.

It is not a de Polignac number, because 11665271377 - 2⁷ = 11665271249 is a prime.

It is a super-2 number, since 2×11665271377² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11665271357) 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 15 ways as a sum of consecutive naturals, for example, 1233774 + ... + 1243192.

It is an arithmetic number, because the mean of its divisors is an integer number (753411600).

Almost surely, 2^11665271377 is an apocalyptic number.

It is an amenable number.

11665271377 is a deficient number, since it is larger than the sum of its proper divisors (389314223).

11665271377 is an equidigital number, since it uses as much as digits as its factorization.

11665271377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9816.

The product of its digits is 370440, while the sum is 46.

The spelling of 11665271377 in words is "eleven billion, six hundred sixty-five million, two hundred seventy-one thousand, three hundred seventy-seven".