2163523534521 has 8 divisors (see below), whose sum is σ = 2886524966880. Its totient is φ = 1441435562592.

The previous prime is 2163523534511. The next prime is 2163523534621. The reversal of 2163523534521 is 1254353253612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2163523534521 - 2⁶ = 2163523534457 is a prime.

It is a super-3 number, since 3×2163523534521³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2163523534511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228359580 + ... + 228369053.

It is an arithmetic number, because the mean of its divisors is an integer number (360815620860).

Almost surely, 2^{2163523534521} is an apocalyptic number.

It is an amenable number.

2163523534521 is a deficient number, since it is larger than the sum of its proper divisors (723001432359).

2163523534521 is a wasteful number, since it uses less digits than its factorization.

2163523534521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456730215.

The product of its digits is 648000, while the sum is 42.

The spelling of 2163523534521 in words is "two trillion, one hundred sixty-three billion, five hundred twenty-three million, five hundred thirty-four thousand, five hundred twenty-one".