20124131145 has 32 divisors (see below), whose sum is σ = 32428940544. Its totient is φ = 10656288000.

The previous prime is 20124131099. The next prime is 20124131197. The reversal of 20124131145 is 54113142102.

It is not a de Polignac number, because 20124131145 - 2¹⁰ = 20124130121 is a prime.

It is a super-2 number, since 2×20124131145² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1767220 + ... + 1778570.

It is an arithmetic number, because the mean of its divisors is an integer number (1013404392).

Almost surely, 2^20124131145 is an apocalyptic number.

It is an amenable number.

20124131145 is a deficient number, since it is larger than the sum of its proper divisors (12304809399).

20124131145 is a wasteful number, since it uses less digits than its factorization.

20124131145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12193.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 20124131145 its reverse (54113142102), we get a palindrome (74237273247).

The spelling of 20124131145 in words is "twenty billion, one hundred twenty-four million, one hundred thirty-one thousand, one hundred forty-five".