20342239037 has 2 divisors, whose sum is σ = 20342239038. Its totient is φ = 20342239036.

The previous prime is 20342239033. The next prime is 20342239129. The reversal of 20342239037 is 73093224302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19219385956 + 1122853081 = 138634^2 + 33509^2 .

It is a cyclic number.

It is not a de Polignac number, because 20342239037 - 2² = 20342239033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20342238988 and 20342239006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20342239033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10171119518 + 10171119519.

It is an arithmetic number, because the mean of its divisors is an integer number (10171119519).

Almost surely, 2^20342239037 is an apocalyptic number.

It is an amenable number.

20342239037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20342239037 is an equidigital number, since it uses as much as digits as its factorization.

20342239037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 35.

The spelling of 20342239037 in words is "twenty billion, three hundred forty-two million, two hundred thirty-nine thousand, thirty-seven".