20988251327 has 2 divisors, whose sum is σ = 20988251328. Its totient is φ = 20988251326.

The previous prime is 20988251311. The next prime is 20988251351. The reversal of 20988251327 is 72315288902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20988251327 - 2⁴ = 20988251311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20988251927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10494125663 + 10494125664.

It is an arithmetic number, because the mean of its divisors is an integer number (10494125664).

Almost surely, 2^20988251327 is an apocalyptic number.

20988251327 is a deficient number, since it is larger than the sum of its proper divisors (1).

20988251327 is an equidigital number, since it uses as much as digits as its factorization.

20988251327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 20988251327 in words is "twenty billion, nine hundred eighty-eight million, two hundred fifty-one thousand, three hundred twenty-seven".