6599340665738 has 8 divisors (see below), whose sum is σ = 9899139849888. Its totient is φ = 3299627382444.

The previous prime is 6599340665719. The next prime is 6599340665761. The reversal of 6599340665738 is 8375660439956.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21282806 + ... + 21590657.

It is an arithmetic number, because the mean of its divisors is an integer number (1237392481236).

Almost surely, 2^{6599340665738} is an apocalyptic number.

6599340665738 is a deficient number, since it is larger than the sum of its proper divisors (3299799184150).

6599340665738 is a wasteful number, since it uses less digits than its factorization.

6599340665738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42950428.

The product of its (nonzero) digits is 881798400, while the sum is 71.

The spelling of 6599340665738 in words is "six trillion, five hundred ninety-nine billion, three hundred forty million, six hundred sixty-five thousand, seven hundred thirty-eight".