2161717143424 has 64 divisors (see below), whose sum is σ = 4730302224000. Its totient is φ = 979450762752.

The previous prime is 2161717143413. The next prime is 2161717143433. The reversal of 2161717143424 is 4243417171612.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19267194 + ... + 19379065.

It is an arithmetic number, because the mean of its divisors is an integer number (73910972250).

Almost surely, 2^{2161717143424} is an apocalyptic number.

It is an amenable number.

2161717143424 is an abundant number, since it is smaller than the sum of its proper divisors (2568585080576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2161717143424 is a wasteful number, since it uses less digits than its factorization.

2161717143424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38646315 (or 38646303 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The spelling of 2161717143424 in words is "two trillion, one hundred sixty-one billion, seven hundred seventeen million, one hundred forty-three thousand, four hundred twenty-four".