128785923597754 has 8 divisors (see below), whose sum is σ = 193199407987860. Its totient is φ = 64386120935136.

The previous prime is 128785923597743. The next prime is 128785923597767. The reversal of 128785923597754 is 457795329587821.

It can be written as a sum of positive squares in 2 ways, for example, as 120518130705625 + 8267792892129 = 10978075^2 + 2875377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 3420408339 + ... + 3420445990.

Almost surely, 2^{128785923597754} is an apocalyptic number.

128785923597754 is a deficient number, since it is larger than the sum of its proper divisors (64413484390106).

128785923597754 is an equidigital number, since it uses as much as digits as its factorization.

128785923597754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6840863744.

The product of its digits is 10668672000, while the sum is 82.

The spelling of 128785923597754 in words is "one hundred twenty-eight trillion, seven hundred eighty-five billion, nine hundred twenty-three million, five hundred ninety-seven thousand, seven hundred fifty-four".