128875402515 has 8 divisors (see below), whose sum is σ = 206200644048. Its totient is φ = 68733548000.

The previous prime is 128875402471. The next prime is 128875402531. The reversal of 128875402515 is 515204578821.

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

It is not a de Polignac number, because 128875402515 - 2¹⁵ = 128875369747 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4295846736 + ... + 4295846765.

It is an arithmetic number, because the mean of its divisors is an integer number (25775080506).

Almost surely, 2^128875402515 is an apocalyptic number.

128875402515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128875402515 is a deficient number, since it is larger than the sum of its proper divisors (77325241533).

128875402515 is an equidigital number, since it uses as much as digits as its factorization.

128875402515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8591693509.

The product of its (nonzero) digits is 896000, while the sum is 48.

The spelling of 128875402515 in words is "one hundred twenty-eight billion, eight hundred seventy-five million, four hundred two thousand, five hundred fifteen".