6665204735992 has 64 divisors (see below), whose sum is σ = 13711205404800. Its totient is φ = 3012346631040.

The previous prime is 6665204735977. The next prime is 6665204735993. The reversal of 6665204735992 is 2995374025666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665204735993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161705178 + ... + 161746390.

It is an arithmetic number, because the mean of its divisors is an integer number (214237584450).

Almost surely, 2^{6665204735992} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6665204735992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6855602702400).

6665204735992 is an abundant number, since it is smaller than the sum of its proper divisors (7046000668808).

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

6665204735992 is a wasteful number, since it uses less digits than its factorization.

6665204735992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51676 (or 51672 counting only the distinct ones).

The product of its (nonzero) digits is 146966400, while the sum is 64.

The spelling of 6665204735992 in words is "six trillion, six hundred sixty-five billion, two hundred four million, seven hundred thirty-five thousand, nine hundred ninety-two".