66241406512 has 40 divisors (see below), whose sum is σ = 128787899904. Its totient is φ = 33005973504.

The previous prime is 66241406509. The next prime is 66241406513. The reversal of 66241406512 is 21560414266.

66241406512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66241406512² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66241406513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8409808 + ... + 8417680.

Almost surely, 2^66241406512 is an apocalyptic number.

It is an amenable number.

66241406512 is a deficient number, since it is larger than the sum of its proper divisors (62546493392).

66241406512 is a wasteful number, since it uses less digits than its factorization.

66241406512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9637 (or 9631 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 66241406512 in words is "sixty-six billion, two hundred forty-one million, four hundred six thousand, five hundred twelve".