66405675116 has 24 divisors (see below), whose sum is σ = 126838439616. Its totient is φ = 30169167120.

The previous prime is 66405675113. The next prime is 66405675131. The reversal of 66405675116 is 61157650466.

66405675116 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 2×66405675116² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66405675113) 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, 292346 + ... + 467201.

It is an arithmetic number, because the mean of its divisors is an integer number (5284934984).

Almost surely, 2^66405675116 is an apocalyptic number.

It is an amenable number.

66405675116 is a deficient number, since it is larger than the sum of its proper divisors (60432764500).

66405675116 is a wasteful number, since it uses less digits than its factorization.

66405675116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761549 (or 761547 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 66405675116 in words is "sixty-six billion, four hundred five million, six hundred seventy-five thousand, one hundred sixteen".