21652024137 has 16 divisors (see below), whose sum is σ = 29099982912. Its totient is φ = 14319452160.

The previous prime is 21652024127. The next prime is 21652024139. The reversal of 21652024137 is 73142025612.

It is not a de Polignac number, because 21652024137 - 2¹¹ = 21652022089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21652024098 and 21652024107.

It is not an unprimeable number, because it can be changed into a prime (21652024139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1350633 + ... + 1366569.

It is an arithmetic number, because the mean of its divisors is an integer number (1818748932).

Almost surely, 2^21652024137 is an apocalyptic number.

It is an amenable number.

21652024137 is a deficient number, since it is larger than the sum of its proper divisors (7447958775).

21652024137 is a wasteful number, since it uses less digits than its factorization.

21652024137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19528.

The product of its (nonzero) digits is 20160, while the sum is 33.

Adding to 21652024137 its reverse (73142025612), we get a palindrome (94794049749).

The spelling of 21652024137 in words is "twenty-one billion, six hundred fifty-two million, twenty-four thousand, one hundred thirty-seven".