664708442948 has 48 divisors (see below), whose sum is σ = 1414352923200. Its totient is φ = 269400545280.

The previous prime is 664708442933. The next prime is 664708442971. The reversal of 664708442948 is 849244807466.

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, 23371253 + ... + 23399676.

It is an arithmetic number, because the mean of its divisors is an integer number (29465685900).

Almost surely, 2^664708442948 is an apocalyptic number.

664708442948 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

664708442948 is an abundant number, since it is smaller than the sum of its proper divisors (749644480252).

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

664708442948 is a wasteful number, since it uses less digits than its factorization.

664708442948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46770980 (or 46770978 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 62.

The spelling of 664708442948 in words is "six hundred sixty-four billion, seven hundred eight million, four hundred forty-two thousand, nine hundred forty-eight".