128144540748 has 24 divisors (see below), whose sum is σ = 341718775552. Its totient is φ = 36612725904.

The previous prime is 128144540717. The next prime is 128144540749. The reversal of 128144540748 is 847045441821.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 128144540697 and 128144540706.

It is not an unprimeable number, because it can be changed into a prime (128144540749) 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, 762765040 + ... + 762765207.

Almost surely, 2^128144540748 is an apocalyptic number.

It is an amenable number.

128144540748 is an abundant number, since it is smaller than the sum of its proper divisors (213574234804).

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

128144540748 is a wasteful number, since it uses less digits than its factorization.

128144540748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525530261 (or 1525530259 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 48.

The spelling of 128144540748 in words is "one hundred twenty-eight billion, one hundred forty-four million, five hundred forty thousand, seven hundred forty-eight".