6660816342 has 16 divisors (see below), whose sum is σ = 14105258352. Its totient is φ = 2089667840.

The previous prime is 6660816341. The next prime is 6660816343. The reversal of 6660816342 is 2436180666.

It is an interprime number because it is at equal distance from previous prime (6660816341) and next prime (6660816343).

It is a junction number, because it is equal to n+sod(n) for n = 6660816294 and 6660816303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660816341) 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 7 ways as a sum of consecutive naturals, for example, 32650959 + ... + 32651162.

It is an arithmetic number, because the mean of its divisors is an integer number (881578647).

Almost surely, 2^6660816342 is an apocalyptic number.

6660816342 is an abundant number, since it is smaller than the sum of its proper divisors (7444442010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6660816342 is a wasteful number, since it uses less digits than its factorization.

6660816342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65302143.

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 6660816342 is about 81613.8244539490. The cubic root of 6660816342 is about 1881.5213600134.

The spelling of 6660816342 in words is "six billion, six hundred sixty million, eight hundred sixteen thousand, three hundred forty-two".