128745957747496 has 8 divisors (see below), whose sum is σ = 241398670776570. Its totient is φ = 64372978873744.

The previous prime is 128745957747443. The next prime is 128745957747503. The reversal of 128745957747496 is 694747759547821.

It can be written as a sum of positive squares in only one way, i.e., 95989634604900 + 32756323142596 = 9797430^2 + 5723314^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8046622359211 + ... + 8046622359226.

Almost surely, 2^{128745957747496} is an apocalyptic number.

It is an amenable number.

128745957747496 is a deficient number, since it is larger than the sum of its proper divisors (112652713029074).

128745957747496 is a wasteful number, since it uses less digits than its factorization.

128745957747496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16093244718443 (or 16093244718439 counting only the distinct ones).

The product of its digits is 29872281600, while the sum is 85.

The spelling of 128745957747496 in words is "one hundred twenty-eight trillion, seven hundred forty-five billion, nine hundred fifty-seven million, seven hundred forty-seven thousand, four hundred ninety-six".