21524042514413 has 8 divisors (see below), whose sum is σ = 22063611560256. Its totient is φ = 20985168344800.

The previous prime is 21524042514409. The next prime is 21524042514421. The reversal of 21524042514413 is 31441524042512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21524042514413 - 2² = 21524042514409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21524042514433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173656331 + ... + 173780232.

It is an arithmetic number, because the mean of its divisors is an integer number (2757951445032).

Almost surely, 2^{21524042514413} is an apocalyptic number.

It is an amenable number.

21524042514413 is a deficient number, since it is larger than the sum of its proper divisors (539569045843).

21524042514413 is a wasteful number, since it uses less digits than its factorization.

21524042514413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347438115.

The product of its (nonzero) digits is 153600, while the sum is 38.

Adding to 21524042514413 its reverse (31441524042512), we get a palindrome (52965566556925).

The spelling of 21524042514413 in words is "twenty-one trillion, five hundred twenty-four billion, forty-two million, five hundred fourteen thousand, four hundred thirteen".