9477988128 has 72 divisors (see below), whose sum is σ = 30803467968. Its totient is φ = 2707996032.

The previous prime is 9477988127. The next prime is 9477988129. The reversal of 9477988128 is 8218897749.

9477988128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9477988127) and next prime (9477988129).

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (9477988123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2348676 + ... + 2352707.

It is an arithmetic number, because the mean of its divisors is an integer number (427825944).

Almost surely, 2^9477988128 is an apocalyptic number.

It is an amenable number.

9477988128 is an abundant number, since it is smaller than the sum of its proper divisors (21325479840).

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

9477988128 is a wasteful number, since it uses less digits than its factorization.

9477988128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4701406 (or 4701395 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 63.

The square root of 9477988128 is about 97354.9594422390. The cubic root of 9477988128 is about 2116.2747656057.

The spelling of 9477988128 in words is "nine billion, four hundred seventy-seven million, nine hundred eighty-eight thousand, one hundred twenty-eight".