11655664143 has 16 divisors (see below), whose sum is σ = 15651434496. Its totient is φ = 7715242080.

The previous prime is 11655664103. The next prime is 11655664211. The reversal of 11655664143 is 34146655611.

It is not a de Polignac number, because 11655664143 - 2¹² = 11655660047 is a prime.

It is a super-2 number, since 2×11655664143² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11655664095 and 11655664104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11655664103) 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, 684430 + ... + 701252.

It is an arithmetic number, because the mean of its divisors is an integer number (978214656).

Almost surely, 2^11655664143 is an apocalyptic number.

11655664143 is a deficient number, since it is larger than the sum of its proper divisors (3995770353).

11655664143 is a wasteful number, since it uses less digits than its factorization.

11655664143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18454.

The product of its digits is 259200, while the sum is 42.

The spelling of 11655664143 in words is "eleven billion, six hundred fifty-five million, six hundred sixty-four thousand, one hundred forty-three".