20967217927 has 2 divisors, whose sum is σ = 20967217928. Its totient is φ = 20967217926.

The previous prime is 20967217883. The next prime is 20967217949. The reversal of 20967217927 is 72971276902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20967217927 - 2¹⁹ = 20966693639 is a prime.

It is a super-3 number, since 3×20967217927³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20967217127) 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, 10483608963 + 10483608964.

It is an arithmetic number, because the mean of its divisors is an integer number (10483608964).

Almost surely, 2^20967217927 is an apocalyptic number.

20967217927 is a deficient number, since it is larger than the sum of its proper divisors (1).

20967217927 is an equidigital number, since it uses as much as digits as its factorization.

20967217927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1333584, while the sum is 52.

The spelling of 20967217927 in words is "twenty billion, nine hundred sixty-seven million, two hundred seventeen thousand, nine hundred twenty-seven".