128015542446752 has 24 divisors (see below), whose sum is σ = 260721309510900. Its totient is φ = 61800606697984.

The previous prime is 128015542446733. The next prime is 128015542446773. The reversal of 128015542446752 is 257644245510821.

It can be written as a sum of positive squares in 2 ways, for example, as 115679403550096 + 12336138896656 = 10755436^2 + 3512284^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68973890477 + ... + 68973892332.

Almost surely, 2^{128015542446752} is an apocalyptic number.

It is an amenable number.

128015542446752 is an abundant number, since it is smaller than the sum of its proper divisors (132705767064148).

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

128015542446752 is a wasteful number, since it uses less digits than its factorization.

128015542446752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137947782848 (or 137947782840 counting only the distinct ones).

The product of its (nonzero) digits is 21504000, while the sum is 56.

The spelling of 128015542446752 in words is "one hundred twenty-eight trillion, fifteen billion, five hundred forty-two million, four hundred forty-six thousand, seven hundred fifty-two".