20253196321 has 2 divisors, whose sum is σ = 20253196322. Its totient is φ = 20253196320.

The previous prime is 20253196309. The next prime is 20253196331. The reversal of 20253196321 is 12369135202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14299376400 + 5953819921 = 119580^2 + 77161^2 .

It is a cyclic number.

It is not a de Polignac number, because 20253196321 - 2⁵ = 20253196289 is a prime.

It is a super-2 number, since 2×20253196321² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20253196331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10126598160 + 10126598161.

It is an arithmetic number, because the mean of its divisors is an integer number (10126598161).

Almost surely, 2^20253196321 is an apocalyptic number.

It is an amenable number.

20253196321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20253196321 is an equidigital number, since it uses as much as digits as its factorization.

20253196321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 20253196321 in words is "twenty billion, two hundred fifty-three million, one hundred ninety-six thousand, three hundred twenty-one".