20122336537 has 2 divisors, whose sum is σ = 20122336538. Its totient is φ = 20122336536.

The previous prime is 20122336519. The next prime is 20122336543. The reversal of 20122336537 is 73563322102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20094763536 + 27573001 = 141756^2 + 5251^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122336537 - 2²³ = 20113947929 is a prime.

It is not a weakly prime, because it can be changed into another prime (20122336937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061168268 + 10061168269.

It is an arithmetic number, because the mean of its divisors is an integer number (10061168269).

Almost surely, 2^20122336537 is an apocalyptic number.

It is an amenable number.

20122336537 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122336537 is an equidigital number, since it uses as much as digits as its factorization.

20122336537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 34.

Adding to 20122336537 its reverse (73563322102), we get a palindrome (93685658639).

The spelling of 20122336537 in words is "twenty billion, one hundred twenty-two million, three hundred thirty-six thousand, five hundred thirty-seven".