667725788843 has 16 divisors (see below), whose sum is σ = 714365386560. Its totient is φ = 621905473536.

The previous prime is 667725788837. The next prime is 667725788881. The reversal of 667725788843 is 348887527766.

It is a cyclic number.

It is not a de Polignac number, because 667725788843 - 2¹⁶ = 667725723307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667725788833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26303705 + ... + 26329077.

It is an arithmetic number, because the mean of its divisors is an integer number (44647836660).

Almost surely, 2^667725788843 is an apocalyptic number.

667725788843 is a deficient number, since it is larger than the sum of its proper divisors (46639597717).

667725788843 is a wasteful number, since it uses less digits than its factorization.

667725788843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41446.

The product of its digits is 758661120, while the sum is 71.

The spelling of 667725788843 in words is "six hundred sixty-seven billion, seven hundred twenty-five million, seven hundred eighty-eight thousand, eight hundred forty-three".