128603820049 has 16 divisors (see below), whose sum is σ = 130422096000. Its totient is φ = 126797299200.

The previous prime is 128603820043. The next prime is 128603820053. The reversal of 128603820049 is 940028306821.

It is a cyclic number.

It is not a de Polignac number, because 128603820049 - 2³ = 128603820041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128603819987 and 128603820014.

It is not an unprimeable number, because it can be changed into a prime (128603820041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31144417 + ... + 31148545.

It is an arithmetic number, because the mean of its divisors is an integer number (8151381000).

Almost surely, 2^128603820049 is an apocalyptic number.

It is an amenable number.

128603820049 is a deficient number, since it is larger than the sum of its proper divisors (1818275951).

128603820049 is a wasteful number, since it uses less digits than its factorization.

128603820049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5448.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 128603820049 in words is "one hundred twenty-eight billion, six hundred three million, eight hundred twenty thousand, forty-nine".