2164433536421 has 16 divisors (see below), whose sum is σ = 2359123812864. Its totient is φ = 1973773458624.

The previous prime is 2164433536411. The next prime is 2164433536457. The reversal of 2164433536421 is 1246353344612.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2164433536421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164433536411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33975020 + ... + 34038666.

It is an arithmetic number, because the mean of its divisors is an integer number (147445238304).

Almost surely, 2^{2164433536421} is an apocalyptic number.

It is an amenable number.

2164433536421 is a deficient number, since it is larger than the sum of its proper divisors (194690276443).

2164433536421 is a wasteful number, since it uses less digits than its factorization.

2164433536421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95260.

The product of its digits is 1244160, while the sum is 44.

The spelling of 2164433536421 in words is "two trillion, one hundred sixty-four billion, four hundred thirty-three million, five hundred thirty-six thousand, four hundred twenty-one".