164917587735647 has 2 divisors, whose sum is σ = 164917587735648. Its totient is φ = 164917587735646.

The previous prime is 164917587735617. The next prime is 164917587735683. The reversal of 164917587735647 is 746537785719461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164917587735647 - 2²² = 164917583541343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164917587735617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82458793867823 + 82458793867824.

It is an arithmetic number, because the mean of its divisors is an integer number (82458793867824).

Almost surely, 2^{164917587735647} is an apocalyptic number.

164917587735647 is a deficient number, since it is larger than the sum of its proper divisors (1).

164917587735647 is an equidigital number, since it uses as much as digits as its factorization.

164917587735647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7468070400, while the sum is 80.

The spelling of 164917587735647 in words is "one hundred sixty-four trillion, nine hundred seventeen billion, five hundred eighty-seven million, seven hundred thirty-five thousand, six hundred forty-seven".