128506876451 has 8 divisors (see below), whose sum is σ = 132214479504. Its totient is φ = 124811612640.

The previous prime is 128506876369. The next prime is 128506876481. The reversal of 128506876451 is 154678605821.

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

It is a cyclic number.

It is not a de Polignac number, because 128506876451 - 2¹⁸ = 128506614307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128506876393 and 128506876402.

It is not an unprimeable number, because it can be changed into a prime (128506876481) 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, 3063680 + ... + 3105341.

It is an arithmetic number, because the mean of its divisors is an integer number (16526809938).

Almost surely, 2^128506876451 is an apocalyptic number.

128506876451 is a deficient number, since it is larger than the sum of its proper divisors (3707603053).

128506876451 is an equidigital number, since it uses as much as digits as its factorization.

128506876451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6169621.

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 128506876451 in words is "one hundred twenty-eight billion, five hundred six million, eight hundred seventy-six thousand, four hundred fifty-one".