666281241772 has 6 divisors (see below), whose sum is σ = 1165992173108. Its totient is φ = 333140620884.

The previous prime is 666281241767. The next prime is 666281241797. The reversal of 666281241772 is 277142182666.

666281241772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83285155218 + ... + 83285155225.

Almost surely, 2^666281241772 is an apocalyptic number.

It is an amenable number.

666281241772 is a deficient number, since it is larger than the sum of its proper divisors (499710931336).

666281241772 is a wasteful number, since it uses less digits than its factorization.

666281241772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166570310447 (or 166570310445 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 52.

The spelling of 666281241772 in words is "six hundred sixty-six billion, two hundred eighty-one million, two hundred forty-one thousand, seven hundred seventy-two".