128910657754 has 8 divisors (see below), whose sum is σ = 193563907668. Its totient is φ = 64389355200.

The previous prime is 128910657751. The next prime is 128910657763. The reversal of 128910657754 is 457756019821.

It can be written as a sum of positive squares in 2 ways, for example, as 93933055225 + 34977602529 = 306485^2 + 187023^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 128910657695 and 128910657704.

It is not an unprimeable number, because it can be changed into a prime (128910657751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32984397 + ... + 32988304.

Almost surely, 2^128910657754 is an apocalyptic number.

128910657754 is a deficient number, since it is larger than the sum of its proper divisors (64653249914).

128910657754 is an equidigital number, since it uses as much as digits as its factorization.

128910657754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65973680.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 128910657754 in words is "one hundred twenty-eight billion, nine hundred ten million, six hundred fifty-seven thousand, seven hundred fifty-four".