11660402023231 has 16 divisors (see below), whose sum is σ = 12761615874784. Its totient is φ = 10588792604544.

The previous prime is 11660402023211. The next prime is 11660402023279. The reversal of 11660402023231 is 13232020406611.

It is a cyclic number.

It is not a de Polignac number, because 11660402023231 - 2¹³ = 11660402015039 is a prime.

It is a super-2 number, since 2×11660402023231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11660402023193 and 11660402023202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11660402023211) 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, 8183040 + ... + 9501733.

It is an arithmetic number, because the mean of its divisors is an integer number (797600992174).

Almost surely, 2^{11660402023231} is an apocalyptic number.

11660402023231 is a deficient number, since it is larger than the sum of its proper divisors (1101213851553).

11660402023231 is a wasteful number, since it uses less digits than its factorization.

11660402023231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17685610.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 11660402023231 its reverse (13232020406611), we get a palindrome (24892422429842).

The spelling of 11660402023231 in words is "eleven trillion, six hundred sixty billion, four hundred two million, twenty-three thousand, two hundred thirty-one".