20242015521 has 32 divisors (see below), whose sum is σ = 33990190080. Its totient is φ = 10428796224.

The previous prime is 20242015489. The next prime is 20242015543. The reversal of 20242015521 is 12551024202.

It is not a de Polignac number, because 20242015521 - 2⁵ = 20242015489 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20242015491 and 20242015500.

It is not an unprimeable number, because it can be changed into a prime (20242015561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 850431 + ... + 873908.

It is an arithmetic number, because the mean of its divisors is an integer number (1062193440).

Almost surely, 2^20242015521 is an apocalyptic number.

20242015521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20242015521 is a deficient number, since it is larger than the sum of its proper divisors (13748174559).

20242015521 is a wasteful number, since it uses less digits than its factorization.

20242015521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724405.

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 20242015521 its reverse (12551024202), we get a palindrome (32793039723).

The spelling of 20242015521 in words is "twenty billion, two hundred forty-two million, fifteen thousand, five hundred twenty-one".