128015402548 has 24 divisors (see below), whose sum is σ = 244578438720. Its totient is φ = 58144677120.

The previous prime is 128015402527. The next prime is 128015402551. The reversal of 128015402548 is 845204510821.

It is a self number, because there is not a number n which added to its sum of digits gives 128015402548.

It is a congruent number.

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, 1044861 + ... + 1160932.

It is an arithmetic number, because the mean of its divisors is an integer number (10190768280).

Almost surely, 2^128015402548 is an apocalyptic number.

It is an amenable number.

128015402548 is a deficient number, since it is larger than the sum of its proper divisors (116563036172).

128015402548 is a wasteful number, since it uses less digits than its factorization.

128015402548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207127 (or 2207125 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 40.

The spelling of 128015402548 in words is "one hundred twenty-eight billion, fifteen million, four hundred two thousand, five hundred forty-eight".