20732078441 has 2 divisors, whose sum is σ = 20732078442. Its totient is φ = 20732078440.

The previous prime is 20732078431. The next prime is 20732078443. The reversal of 20732078441 is 14487023702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16083566041 + 4648512400 = 126821^2 + 68180^2 .

It is a cyclic number.

It is not a de Polignac number, because 20732078441 - 2¹⁸ = 20731816297 is a prime.

Together with 20732078443, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20732078395 and 20732078404.

It is not a weakly prime, because it can be changed into another prime (20732078443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10366039220 + 10366039221.

It is an arithmetic number, because the mean of its divisors is an integer number (10366039221).

Almost surely, 2^20732078441 is an apocalyptic number.

It is an amenable number.

20732078441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20732078441 is an equidigital number, since it uses as much as digits as its factorization.

20732078441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 38.

The spelling of 20732078441 in words is "twenty billion, seven hundred thirty-two million, seventy-eight thousand, four hundred forty-one".