20124552137 has 2 divisors, whose sum is σ = 20124552138. Its totient is φ = 20124552136.

The previous prime is 20124552101. The next prime is 20124552191. The reversal of 20124552137 is 73125542102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19518604681 + 605947456 = 139709^2 + 24616^2 .

It is a cyclic number.

It is not a de Polignac number, because 20124552137 - 2¹⁸ = 20124289993 is a prime.

It is not a weakly prime, because it can be changed into another prime (20124552337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062276068 + 10062276069.

It is an arithmetic number, because the mean of its divisors is an integer number (10062276069).

Almost surely, 2^20124552137 is an apocalyptic number.

It is an amenable number.

20124552137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124552137 is an equidigital number, since it uses as much as digits as its factorization.

20124552137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 20124552137 in words is "twenty billion, one hundred twenty-four million, five hundred fifty-two thousand, one hundred thirty-seven".