1006665126631 has 4 divisors (see below), whose sum is σ = 1039138195264. Its totient is φ = 974192058000.

The previous prime is 1006665126629. The next prime is 1006665126659. The reversal of 1006665126631 is 1366215666001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1006665126631 - 2¹ = 1006665126629 is a prime.

It is a super-2 number, since 2×1006665126631² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006665126601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16236534270 + ... + 16236534331.

It is an arithmetic number, because the mean of its divisors is an integer number (259784548816).

Almost surely, 2^{1006665126631} is an apocalyptic number.

1006665126631 is a deficient number, since it is larger than the sum of its proper divisors (32473068633).

1006665126631 is an equidigital number, since it uses as much as digits as its factorization.

1006665126631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32473068632.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 1006665126631 in words is "one trillion, six billion, six hundred sixty-five million, one hundred twenty-six thousand, six hundred thirty-one".