665365341300 has 144 divisors (see below), whose sum is σ = 2100451229184. Its totient is φ = 161276400000.

The previous prime is 665365341299. The next prime is 665365341301. The reversal of 665365341300 is 3143563566.

It is an interprime number because it is at equal distance from previous prime (665365341299) and next prime (665365341301).

It is a super-2 number, since 2×665365341300² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665365341301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32366025 + ... + 32386575.

Almost surely, 2^665365341300 is an apocalyptic number.

665365341300 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 665365341300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1050225614592).

665365341300 is an abundant number, since it is smaller than the sum of its proper divisors (1435085887884).

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

665365341300 is a wasteful number, since it uses less digits than its factorization.

665365341300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30390 (or 30383 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 42.

The spelling of 665365341300 in words is "six hundred sixty-five billion, three hundred sixty-five million, three hundred forty-one thousand, three hundred".