128995935801 has 16 divisors (see below), whose sum is σ = 181091424000. Its totient is φ = 81451093968.

The previous prime is 128995935799. The next prime is 128995935821. The reversal of 128995935801 is 108539599821.

It is not a de Polignac number, because 128995935801 - 2¹ = 128995935799 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128995935821) 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, 42411 + ... + 509696.

It is an arithmetic number, because the mean of its divisors is an integer number (11318214000).

Almost surely, 2^128995935801 is an apocalyptic number.

It is an amenable number.

128995935801 is a deficient number, since it is larger than the sum of its proper divisors (52095488199).

128995935801 is a wasteful number, since it uses less digits than its factorization.

128995935801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556228.

The product of its (nonzero) digits is 6998400, while the sum is 60.

The spelling of 128995935801 in words is "one hundred twenty-eight billion, nine hundred ninety-five million, nine hundred thirty-five thousand, eight hundred one".