6660156005 has 8 divisors (see below), whose sum is σ = 7993152024. Its totient is φ = 5327481600.

The previous prime is 6660155987. The next prime is 6660156031. The reversal of 6660156005 is 5006510666.

It can be written as a sum of positive squares in 4 ways, for example, as 154604356 + 6505551649 = 12434^2 + 80657^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6660156005 - 2¹⁰ = 6660154981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32216 + ... + 119825.

It is an arithmetic number, because the mean of its divisors is an integer number (999144003).

Almost surely, 2^6660156005 is an apocalyptic number.

It is an amenable number.

6660156005 is a deficient number, since it is larger than the sum of its proper divisors (1332996019).

6660156005 is a wasteful number, since it uses less digits than its factorization.

6660156005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160807.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 6660156005 is about 81609.7788564581. The cubic root of 6660156005 is about 1881.4591814872.

The spelling of 6660156005 in words is "six billion, six hundred sixty million, one hundred fifty-six thousand, five".