2161655051143 has 24 divisors (see below), whose sum is σ = 2724413223312. Its totient is φ = 1703301352704.

The previous prime is 2161655051123. The next prime is 2161655051147. The reversal of 2161655051143 is 3411505561612.

It is not a de Polignac number, because 2161655051143 - 2⁹ = 2161655050631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2161655051096 and 2161655051105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161655051147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30138880 + ... + 30210517.

It is an arithmetic number, because the mean of its divisors is an integer number (113517217638).

Almost surely, 2^{2161655051143} is an apocalyptic number.

2161655051143 is a deficient number, since it is larger than the sum of its proper divisors (562758172169).

2161655051143 is a wasteful number, since it uses less digits than its factorization.

2161655051143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60349471 (or 60349464 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 2161655051143 in words is "two trillion, one hundred sixty-one billion, six hundred fifty-five million, fifty-one thousand, one hundred forty-three".