2161450676671 has 32 divisors (see below), whose sum is σ = 2652723053568. Its totient is φ = 1732985379840.

The previous prime is 2161450676657. The next prime is 2161450676767. The reversal of 2161450676671 is 1766760541612.

It is not a de Polignac number, because 2161450676671 - 2⁵ = 2161450676639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161450673671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2546895 + ... + 3287791.

It is an arithmetic number, because the mean of its divisors is an integer number (82897595424).

Almost surely, 2^{2161450676671} is an apocalyptic number.

2161450676671 is a deficient number, since it is larger than the sum of its proper divisors (491272376897).

2161450676671 is a wasteful number, since it uses less digits than its factorization.

2161450676671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741831.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 2161450676671 in words is "two trillion, one hundred sixty-one billion, four hundred fifty million, six hundred seventy-six thousand, six hundred seventy-one".