2128694601601 has 8 divisors (see below), whose sum is σ = 2241048819680. Its totient is φ = 2016372149568.

The previous prime is 2128694601599. The next prime is 2128694601637. The reversal of 2128694601601 is 1061064968212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2128694601601 - 2¹ = 2128694601599 is a prime.

It is a super-2 number, since 2×2128694601601² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2128694671601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7803891 + ... + 8072056.

It is an arithmetic number, because the mean of its divisors is an integer number (280131102460).

Almost surely, 2^{2128694601601} is an apocalyptic number.

It is an amenable number.

2128694601601 is a deficient number, since it is larger than the sum of its proper divisors (112354218079).

2128694601601 is a wasteful number, since it uses less digits than its factorization.

2128694601601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15883023.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 2128694601601 in words is "two trillion, one hundred twenty-eight billion, six hundred ninety-four million, six hundred one thousand, six hundred one".