666027475244432 has 120 divisors (see below), whose sum is σ = 1502965511863200. Its totient is φ = 285087638803968.

The previous prime is 666027475244431. The next prime is 666027475244441. The reversal of 666027475244432 is 234442574720666.

It is not an unprimeable number, because it can be changed into a prime (666027475244431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12889248548 + ... + 12889300220.

It is an arithmetic number, because the mean of its divisors is an integer number (12524712598860).

Almost surely, 2^{666027475244432} 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 666027475244432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (751482755931600).

666027475244432 is an abundant number, since it is smaller than the sum of its proper divisors (836938036618768).

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

666027475244432 is a wasteful number, since it uses less digits than its factorization.

666027475244432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71693 (or 71680 counting only the distinct ones).

The product of its (nonzero) digits is 325140480, while the sum is 62.

The spelling of 666027475244432 in words is "six hundred sixty-six trillion, twenty-seven billion, four hundred seventy-five million, two hundred forty-four thousand, four hundred thirty-two".