128244036650 has 24 divisors (see below), whose sum is σ = 238571620320. Its totient is φ = 51289504560.

The previous prime is 128244036649. The next prime is 128244036731. The reversal of 128244036650 is 56630442821.

It is a junction number, because it is equal to n+sod(n) for n = 128244036598 and 128244036607.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121811 + ... + 520889.

It is an arithmetic number, because the mean of its divisors is an integer number (9940484180).

Almost surely, 2^128244036650 is an apocalyptic number.

128244036650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128244036650 is a deficient number, since it is larger than the sum of its proper divisors (110327583670).

128244036650 is a wasteful number, since it uses less digits than its factorization.

128244036650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405518 (or 405513 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 128244036650 in words is "one hundred twenty-eight billion, two hundred forty-four million, thirty-six thousand, six hundred fifty".