20124530013 has 16 divisors (see below), whose sum is σ = 30686294016. Its totient is φ = 11492102640.

The previous prime is 20124530003. The next prime is 20124530021. The reversal of 20124530013 is 31003542102.

It is not a de Polignac number, because 20124530013 - 2⁵ = 20124529981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124530003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285381 + ... + 348842.

It is an arithmetic number, because the mean of its divisors is an integer number (1917893376).

Almost surely, 2^20124530013 is an apocalyptic number.

It is an amenable number.

20124530013 is a deficient number, since it is larger than the sum of its proper divisors (10561764003).

20124530013 is a wasteful number, since it uses less digits than its factorization.

20124530013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635744.

The product of its (nonzero) digits is 720, while the sum is 21.

The spelling of 20124530013 in words is "twenty billion, one hundred twenty-four million, five hundred thirty thousand, thirteen".