21412524531 has 16 divisors (see below), whose sum is σ = 28596826368. Its totient is φ = 14251644000.

The previous prime is 21412524517. The next prime is 21412524583. The reversal of 21412524531 is 13542521412.

It is not a de Polignac number, because 21412524531 - 2⁵ = 21412524499 is a prime.

It is a super-2 number, since 2×21412524531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21412524431) 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, 6993741 + ... + 6996801.

It is an arithmetic number, because the mean of its divisors is an integer number (1787301648).

Almost surely, 2^21412524531 is an apocalyptic number.

21412524531 is a deficient number, since it is larger than the sum of its proper divisors (7184301837).

21412524531 is a wasteful number, since it uses less digits than its factorization.

21412524531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6122.

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

The spelling of 21412524531 in words is "twenty-one billion, four hundred twelve million, five hundred twenty-four thousand, five hundred thirty-one".