163020556247 has 2 divisors, whose sum is σ = 163020556248. Its totient is φ = 163020556246.

The previous prime is 163020556201. The next prime is 163020556273. The reversal of 163020556247 is 742655020361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163020556247 - 2¹⁴ = 163020539863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163020556147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81510278123 + 81510278124.

It is an arithmetic number, because the mean of its divisors is an integer number (81510278124).

Almost surely, 2^163020556247 is an apocalyptic number.

163020556247 is a deficient number, since it is larger than the sum of its proper divisors (1).

163020556247 is an equidigital number, since it uses as much as digits as its factorization.

163020556247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 163020556247 in words is "one hundred sixty-three billion, twenty million, five hundred fifty-six thousand, two hundred forty-seven".