667706872082 has 16 divisors (see below), whose sum is σ = 1016369016192. Its totient is φ = 328923702240.

The previous prime is 667706872051. The next prime is 667706872121. The reversal of 667706872082 is 280278607766.

It is a happy number.

667706872082 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 2×667706872082² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1419323 + ... + 1830270.

It is an arithmetic number, because the mean of its divisors is an integer number (63523063512).

Almost surely, 2^667706872082 is an apocalyptic number.

667706872082 is a deficient number, since it is larger than the sum of its proper divisors (348662144110).

667706872082 is a wasteful number, since it uses less digits than its factorization.

667706872082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251113.

The product of its (nonzero) digits is 18966528, while the sum is 59.

The spelling of 667706872082 in words is "six hundred sixty-seven billion, seven hundred six million, eight hundred seventy-two thousand, eighty-two".