947664377128 has 32 divisors (see below), whose sum is σ = 2030771108160. Its totient is φ = 406129530240.

The previous prime is 947664377087. The next prime is 947664377131. The reversal of 947664377128 is 821773466749.

It is a self number, because there is not a number n which added to its sum of digits gives 947664377128.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1738548 + ... + 2217628.

It is an arithmetic number, because the mean of its divisors is an integer number (63461597130).

Almost surely, 2^947664377128 is an apocalyptic number.

It is an amenable number.

947664377128 is an abundant number, since it is smaller than the sum of its proper divisors (1083106731032).

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

947664377128 is a wasteful number, since it uses less digits than its factorization.

947664377128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514417 (or 514413 counting only the distinct ones).

The product of its digits is 85349376, while the sum is 64.

The spelling of 947664377128 in words is "nine hundred forty-seven billion, six hundred sixty-four million, three hundred seventy-seven thousand, one hundred twenty-eight".