20124397541 has 2 divisors, whose sum is σ = 20124397542. Its totient is φ = 20124397540.

The previous prime is 20124397529. The next prime is 20124397571. The reversal of 20124397541 is 14579342102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17783289316 + 2341108225 = 133354^2 + 48385^2 .

It is a cyclic number.

It is not a de Polignac number, because 20124397541 - 2¹⁴ = 20124381157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20124397495 and 20124397504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20124397571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062198770 + 10062198771.

It is an arithmetic number, because the mean of its divisors is an integer number (10062198771).

Almost surely, 2^20124397541 is an apocalyptic number.

It is an amenable number.

20124397541 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124397541 is an equidigital number, since it uses as much as digits as its factorization.

20124397541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 20124397541 in words is "twenty billion, one hundred twenty-four million, three hundred ninety-seven thousand, five hundred forty-one".