128545549464 has 32 divisors (see below), whose sum is σ = 329202019440. Its totient is φ = 41803430400.

The previous prime is 128545549463. The next prime is 128545549471. The reversal of 128545549464 is 464945545821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128545549463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65316877 + ... + 65318844.

Almost surely, 2^128545549464 is an apocalyptic number.

It is an amenable number.

128545549464 is an abundant number, since it is smaller than the sum of its proper divisors (200656469976).

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

128545549464 is a wasteful number, since it uses less digits than its factorization.

128545549464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130635771 (or 130635767 counting only the distinct ones).

The product of its digits is 27648000, while the sum is 57.

The spelling of 128545549464 in words is "one hundred twenty-eight billion, five hundred forty-five million, five hundred forty-nine thousand, four hundred sixty-four".