2161646252301 has 16 divisors (see below), whose sum is σ = 2884209290496. Its totient is φ = 1440090636096.

The previous prime is 2161646252263. The next prime is 2161646252303. The reversal of 2161646252301 is 1032526461612.

It is not a de Polignac number, because 2161646252301 - 2¹⁰ = 2161646251277 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2161646252301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161646252303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35070556 + ... + 35132138.

It is an arithmetic number, because the mean of its divisors is an integer number (180263080656).

Almost surely, 2^{2161646252301} is an apocalyptic number.

It is an amenable number.

2161646252301 is a deficient number, since it is larger than the sum of its proper divisors (722563038195).

2161646252301 is a wasteful number, since it uses less digits than its factorization.

2161646252301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69572.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 2161646252301 in words is "two trillion, one hundred sixty-one billion, six hundred forty-six million, two hundred fifty-two thousand, three hundred one".