20214043397 has 2 divisors, whose sum is σ = 20214043398. Its totient is φ = 20214043396.

The previous prime is 20214043379. The next prime is 20214043439. The reversal of 20214043397 is 79334041202.

Together with previous prime (20214043379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20190704836 + 23338561 = 142094^2 + 4831^2 .

It is a cyclic number.

It is not a de Polignac number, because 20214043397 - 2¹⁴ = 20214027013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20214043357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10107021698 + 10107021699.

It is an arithmetic number, because the mean of its divisors is an integer number (10107021699).

Almost surely, 2^20214043397 is an apocalyptic number.

It is an amenable number.

20214043397 is a deficient number, since it is larger than the sum of its proper divisors (1).

20214043397 is an equidigital number, since it uses as much as digits as its factorization.

20214043397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 35.

Adding to 20214043397 its reverse (79334041202), we get a palindrome (99548084599).

The spelling of 20214043397 in words is "twenty billion, two hundred fourteen million, forty-three thousand, three hundred ninety-seven".