666912476005 has 16 divisors (see below), whose sum is σ = 801276151104. Its totient is φ = 532876089600.

The previous prime is 666912475979. The next prime is 666912476063. The reversal of 666912476005 is 500674219666.

It is a happy number.

666912476005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 666912476005 - 2⁵ = 666912475973 is a prime.

It is a super-2 number, since 2×666912476005² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31502554 + ... + 31523716.

It is an arithmetic number, because the mean of its divisors is an integer number (50079759444).

Almost surely, 2^666912476005 is an apocalyptic number.

It is an amenable number.

666912476005 is a deficient number, since it is larger than the sum of its proper divisors (134363675099).

666912476005 is a wasteful number, since it uses less digits than its factorization.

666912476005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28596.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 666912476005 in words is "six hundred sixty-six billion, nine hundred twelve million, four hundred seventy-six thousand, five".