11660010257 has 16 divisors (see below), whose sum is σ = 13605696000. Its totient is φ = 9988403040.

The previous prime is 11660010209. The next prime is 11660010283. The reversal of 11660010257 is 75201006611.

It is a de Polignac number, because none of the positive numbers 2^k-11660010257 is a prime.

It is a super-3 number, since 3×11660010257³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11660010757) 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, 632669 + ... + 650837.

It is an arithmetic number, because the mean of its divisors is an integer number (850356000).

Almost surely, 2^11660010257 is an apocalyptic number.

It is an amenable number.

11660010257 is a deficient number, since it is larger than the sum of its proper divisors (1945685743).

11660010257 is an equidigital number, since it uses as much as digits as its factorization.

11660010257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20061 (or 20047 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

Adding to 11660010257 its reverse (75201006611), we get a palindrome (86861016868).

The spelling of 11660010257 in words is "eleven billion, six hundred sixty million, ten thousand, two hundred fifty-seven".