20192921340937 has 2 divisors, whose sum is σ = 20192921340938. Its totient is φ = 20192921340936.

The previous prime is 20192921340923. The next prime is 20192921341007. The reversal of 20192921340937 is 73904312929102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14490477636496 + 5702443704441 = 3806636^2 + 2387979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20192921340937 is a prime.

It is not a weakly prime, because it can be changed into another prime (20192921350937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10096460670468 + 10096460670469.

It is an arithmetic number, because the mean of its divisors is an integer number (10096460670469).

Almost surely, 2^{20192921340937} is an apocalyptic number.

It is an amenable number.

20192921340937 is a deficient number, since it is larger than the sum of its proper divisors (1).

20192921340937 is an equidigital number, since it uses as much as digits as its factorization.

20192921340937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 20192921340937 in words is "twenty trillion, one hundred ninety-two billion, nine hundred twenty-one million, three hundred forty thousand, nine hundred thirty-seven".