2161645004151 has 12 divisors (see below), whose sum is σ = 3122635585680. Its totient is φ = 1440976914720.

The previous prime is 2161645004149. The next prime is 2161645004173. The reversal of 2161645004151 is 1514005461612.

2161645004151 is a `hidden beast` number, since 2 + 1 + 6 + 1 + 64 + 500 + 41 + 51 = 666.

It is not a de Polignac number, because 2161645004151 - 2¹ = 2161645004149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161645002151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9865171 + ... + 10081908.

It is an arithmetic number, because the mean of its divisors is an integer number (260219632140).

Almost surely, 2^{2161645004151} is an apocalyptic number.

2161645004151 is a deficient number, since it is larger than the sum of its proper divisors (960990581529).

2161645004151 is a wasteful number, since it uses less digits than its factorization.

2161645004151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19959126 (or 19959123 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 2161645004151 in words is "two trillion, one hundred sixty-one billion, six hundred forty-five million, four thousand, one hundred fifty-one".