21652612010055 has 160 divisors (see below), whose sum is σ = 44299768955904. Its totient is φ = 10023428726784.

The previous prime is 21652612009993. The next prime is 21652612010083. The reversal of 21652612010055 is 55001021625612.

21652612010055 is a `hidden beast` number, since 2 + 1 + 6 + 526 + 1 + 20 + 100 + 5 + 5 = 666.

It is not a de Polignac number, because 21652612010055 - 2²⁰ = 21652610961479 is a prime.

It is a super-2 number, since 2×21652612010055² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 97180659 + ... + 97403211.

Almost surely, 2^{21652612010055} is an apocalyptic number.

21652612010055 is an abundant number, since it is smaller than the sum of its proper divisors (22647156945849).

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

21652612010055 is a wasteful number, since it uses less digits than its factorization.

21652612010055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223687 (or 223678 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

Adding to 21652612010055 its reverse (55001021625612), we get a palindrome (76653633635667).

The spelling of 21652612010055 in words is "twenty-one trillion, six hundred fifty-two billion, six hundred twelve million, ten thousand, fifty-five".