21524412153 has 16 divisors (see below), whose sum is σ = 29878647296. Its totient is φ = 13770518400.

The previous prime is 21524412121. The next prime is 21524412157. The reversal of 21524412153 is 35121442512.

It is not a de Polignac number, because 21524412153 - 2⁵ = 21524412121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21524412153.

It is not an unprimeable number, because it can be changed into a prime (21524412157) 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 15 ways as a sum of consecutive naturals, for example, 1320073 + ... + 1336278.

It is an arithmetic number, because the mean of its divisors is an integer number (1867415456).

Almost surely, 2^21524412153 is an apocalyptic number.

It is an amenable number.

21524412153 is a deficient number, since it is larger than the sum of its proper divisors (8354235143).

21524412153 is a wasteful number, since it uses less digits than its factorization.

21524412153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656464.

The product of its digits is 9600, while the sum is 30.

Adding to 21524412153 its reverse (35121442512), we get a palindrome (56645854665).

The spelling of 21524412153 in words is "twenty-one billion, five hundred twenty-four million, four hundred twelve thousand, one hundred fifty-three".