20152342277 has 2 divisors, whose sum is σ = 20152342278. Its totient is φ = 20152342276.

The previous prime is 20152342213. The next prime is 20152342279. The reversal of 20152342277 is 77224325102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14975395876 + 5176946401 = 122374^2 + 71951^2 .

It is a cyclic number.

It is not a de Polignac number, because 20152342277 - 2⁶ = 20152342213 is a prime.

It is a super-2 number, since 2×20152342277² (a number of 21 digits) contains 22 as substring.

Together with 20152342279, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20152342279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10076171138 + 10076171139.

It is an arithmetic number, because the mean of its divisors is an integer number (10076171139).

Almost surely, 2^20152342277 is an apocalyptic number.

It is an amenable number.

20152342277 is a deficient number, since it is larger than the sum of its proper divisors (1).

20152342277 is an equidigital number, since it uses as much as digits as its factorization.

20152342277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 35.

Adding to 20152342277 its reverse (77224325102), we get a palindrome (97376667379).

The spelling of 20152342277 in words is "twenty billion, one hundred fifty-two million, three hundred forty-two thousand, two hundred seventy-seven".