11668142038 has 32 divisors (see below), whose sum is σ = 20153548800. Its totient is φ = 4962972384.

The previous prime is 11668142009. The next prime is 11668142051. The reversal of 11668142038 is 83024186611.

It is a super-2 number, since 2×11668142038² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1654123 + ... + 1661161.

It is an arithmetic number, because the mean of its divisors is an integer number (629798400).

Almost surely, 2^11668142038 is an apocalyptic number.

11668142038 is a deficient number, since it is larger than the sum of its proper divisors (8485406762).

11668142038 is a wasteful number, since it uses less digits than its factorization.

11668142038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7924.

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 11668142038 in words is "eleven billion, six hundred sixty-eight million, one hundred forty-two thousand, thirty-eight".