20867452147 has 2 divisors, whose sum is σ = 20867452148. Its totient is φ = 20867452146.

The previous prime is 20867452117. The next prime is 20867452163. The reversal of 20867452147 is 74125476802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20867452147 - 2¹¹ = 20867450099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20867452097 and 20867452106.

It is not a weakly prime, because it can be changed into another prime (20867452117) 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, 10433726073 + 10433726074.

It is an arithmetic number, because the mean of its divisors is an integer number (10433726074).

Almost surely, 2^20867452147 is an apocalyptic number.

20867452147 is a deficient number, since it is larger than the sum of its proper divisors (1).

20867452147 is an equidigital number, since it uses as much as digits as its factorization.

20867452147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 752640, while the sum is 46.

The spelling of 20867452147 in words is "twenty billion, eight hundred sixty-seven million, four hundred fifty-two thousand, one hundred forty-seven".