666669402948 has 24 divisors (see below), whose sum is σ = 1556216429152. Its totient is φ = 222129635904.

The previous prime is 666669402901. The next prime is 666669402953. The reversal of 666669402948 is 849204966666.

666669402948 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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, 11657590 + ... + 11714637.

Almost surely, 2^666669402948 is an apocalyptic number.

It is an amenable number.

666669402948 is an abundant number, since it is smaller than the sum of its proper divisors (889547026204).

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

666669402948 is a wasteful number, since it uses less digits than its factorization.

666669402948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23374611 (or 23374609 counting only the distinct ones).

The product of its (nonzero) digits is 161243136, while the sum is 66.

The spelling of 666669402948 in words is "six hundred sixty-six billion, six hundred sixty-nine million, four hundred two thousand, nine hundred forty-eight".