21652624236053 has 4 divisors (see below), whose sum is σ = 21773588617440. Its totient is φ = 21531659854668.

The previous prime is 21652624235999. The next prime is 21652624236109. The reversal of 21652624236053 is 35063242625612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21652624236053 - 2¹⁴ = 21652624219669 is a prime.

It is a super-2 number, since 2×21652624236053² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21652624235989 and 21652624236007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21652624736053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60482190425 + ... + 60482190782.

It is an arithmetic number, because the mean of its divisors is an integer number (5443397154360).

Almost surely, 2^{21652624236053} is an apocalyptic number.

It is an amenable number.

21652624236053 is a deficient number, since it is larger than the sum of its proper divisors (120964381387).

21652624236053 is a wasteful number, since it uses less digits than its factorization.

21652624236053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120964381386.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 21652624236053 in words is "twenty-one trillion, six hundred fifty-two billion, six hundred twenty-four million, two hundred thirty-six thousand, fifty-three".