666433413360 has 720 divisors, whose sum is σ = 2664758757024. Its totient is φ = 148262400000.

The previous prime is 666433413353. The next prime is 666433413361. The reversal of 666433413360 is 63314334666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666433413361) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 204991735 + ... + 204994985.

Almost surely, 2^666433413360 is an apocalyptic number.

666433413360 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 666433413360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332379378512).

666433413360 is an abundant number, since it is smaller than the sum of its proper divisors (1998325343664).

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

666433413360 is a wasteful number, since it uses less digits than its factorization.

666433413360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486 (or 3466 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 45.

The spelling of 666433413360 in words is "six hundred sixty-six billion, four hundred thirty-three million, four hundred thirteen thousand, three hundred sixty".