164256661343 has 2 divisors, whose sum is σ = 164256661344. Its totient is φ = 164256661342.

The previous prime is 164256661339. The next prime is 164256661357. The reversal of 164256661343 is 343166652461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164256661343 - 2² = 164256661339 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164256661243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82128330671 + 82128330672.

It is an arithmetic number, because the mean of its divisors is an integer number (82128330672).

Almost surely, 2^164256661343 is an apocalyptic number.

164256661343 is a deficient number, since it is larger than the sum of its proper divisors (1).

164256661343 is an equidigital number, since it uses as much as digits as its factorization.

164256661343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 47.

The spelling of 164256661343 in words is "one hundred sixty-four billion, two hundred fifty-six million, six hundred sixty-one thousand, three hundred forty-three".