128621100926 has 8 divisors (see below), whose sum is σ = 193080407520. Its totient is φ = 64260965088.

The previous prime is 128621100919. The next prime is 128621100941. The reversal of 128621100926 is 629001126821.

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

It is a self number, because there is not a number n which added to its sum of digits gives 128621100926.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24789446 + ... + 24794633.

It is an arithmetic number, because the mean of its divisors is an integer number (24135050940).

Almost surely, 2^128621100926 is an apocalyptic number.

128621100926 is a deficient number, since it is larger than the sum of its proper divisors (64459306594).

128621100926 is a wasteful number, since it uses less digits than its factorization.

128621100926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49585378.

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 128621100926 in words is "one hundred twenty-eight billion, six hundred twenty-one million, one hundred thousand, nine hundred twenty-six".