128469560990 has 32 divisors (see below), whose sum is σ = 231628451040. Its totient is φ = 51302736000.

The previous prime is 128469560977. The next prime is 128469561029. The reversal of 128469560990 is 99065964821.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19405901 + ... + 19412519.

It is an arithmetic number, because the mean of its divisors is an integer number (7238389095).

Almost surely, 2^128469560990 is an apocalyptic number.

128469560990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128469560990 is a deficient number, since it is larger than the sum of its proper divisors (103158890050).

128469560990 is a wasteful number, since it uses less digits than its factorization.

128469560990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9548.

The product of its (nonzero) digits is 8398080, while the sum is 59.

The spelling of 128469560990 in words is "one hundred twenty-eight billion, four hundred sixty-nine million, five hundred sixty thousand, nine hundred ninety".