10531666555 has 16 divisors (see below), whose sum is σ = 12686688000. Its totient is φ = 8392924800.

The previous prime is 10531666553. The next prime is 10531666559. The reversal of 10531666555 is 55566613501.

It is a happy number.

It is not a de Polignac number, because 10531666555 - 2¹ = 10531666553 is a prime.

It is a super-2 number, since 2×10531666555² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10531666553) 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, 2267926 + ... + 2272564.

It is an arithmetic number, because the mean of its divisors is an integer number (792918000).

Almost surely, 2^10531666555 is an apocalyptic number.

10531666555 is a deficient number, since it is larger than the sum of its proper divisors (2155021445).

10531666555 is a wasteful number, since it uses less digits than its factorization.

10531666555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6294.

The product of its (nonzero) digits is 405000, while the sum is 43.

The spelling of 10531666555 in words is "ten billion, five hundred thirty-one million, six hundred sixty-six thousand, five hundred fifty-five".