667955683900 has 18 divisors (see below), whose sum is σ = 1449463834280. Its totient is φ = 267182273520.

The previous prime is 667955683883. The next prime is 667955683903. The reversal of 667955683900 is 9386559766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667955683903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3339778320 + ... + 3339778519.

Almost surely, 2^667955683900 is an apocalyptic number.

It is an amenable number.

667955683900 is an abundant number, since it is smaller than the sum of its proper divisors (781508150380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667955683900 is a wasteful number, since it uses less digits than its factorization.

667955683900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6679556853 (or 6679556846 counting only the distinct ones).

The product of its (nonzero) digits is 73483200, while the sum is 64.

The spelling of 667955683900 in words is "six hundred sixty-seven billion, nine hundred fifty-five million, six hundred eighty-three thousand, nine hundred".