20150223853 has 2 divisors, whose sum is σ = 20150223854. Its totient is φ = 20150223852.

The previous prime is 20150223839. The next prime is 20150223869. The reversal of 20150223853 is 35832205102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15899444649 + 4250779204 = 126093^2 + 65198^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20150223853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20150223883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10075111926 + 10075111927.

It is an arithmetic number, because the mean of its divisors is an integer number (10075111927).

Almost surely, 2^20150223853 is an apocalyptic number.

It is an amenable number.

20150223853 is a deficient number, since it is larger than the sum of its proper divisors (1).

20150223853 is an equidigital number, since it uses as much as digits as its factorization.

20150223853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 20150223853 its reverse (35832205102), we get a palindrome (55982428955).

The spelling of 20150223853 in words is "twenty billion, one hundred fifty million, two hundred twenty-three thousand, eight hundred fifty-three".