128204363135 has 16 divisors (see below), whose sum is σ = 160547374080. Its totient is φ = 98096132640.

The previous prime is 128204363117. The next prime is 128204363137. The reversal of 128204363135 is 531363402821.

It is a de Polignac number, because none of the positive numbers 2^k-128204363135 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128204363137) 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, 1618586 + ... + 1695944.

It is an arithmetic number, because the mean of its divisors is an integer number (10034210880).

Almost surely, 2^128204363135 is an apocalyptic number.

128204363135 is a deficient number, since it is larger than the sum of its proper divisors (32343010945).

128204363135 is a wasteful number, since it uses less digits than its factorization.

128204363135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91798.

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 128204363135 its reverse (531363402821), we get a palindrome (659567765956).

The spelling of 128204363135 in words is "one hundred twenty-eight billion, two hundred four million, three hundred sixty-three thousand, one hundred thirty-five".