21652525163026 has 24 divisors (see below), whose sum is σ = 33678875874672. Its totient is φ = 10440006741000.

The previous prime is 21652525163021. The next prime is 21652525163069. The reversal of 21652525163026 is 62036152525612.

It is not an unprimeable number, because it can be changed into a prime (21652525163021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19360000 + ... + 20447851.

It is an arithmetic number, because the mean of its divisors is an integer number (1403286494778).

Almost surely, 2^{21652525163026} is an apocalyptic number.

21652525163026 is a deficient number, since it is larger than the sum of its proper divisors (12026350711646).

21652525163026 is a wasteful number, since it uses less digits than its factorization.

21652525163026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39808198 (or 39808167 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 46.

Adding to 21652525163026 its reverse (62036152525612), we get a palindrome (83688677688638).

The spelling of 21652525163026 in words is "twenty-one trillion, six hundred fifty-two billion, five hundred twenty-five million, one hundred sixty-three thousand, twenty-six".