164256661319 has 2 divisors, whose sum is σ = 164256661320. Its totient is φ = 164256661318.

The previous prime is 164256661297. The next prime is 164256661339. The reversal of 164256661319 is 913166652461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164256661319 - 2³⁶ = 95537184583 is a prime.

It is a super-2 number, since 2×164256661319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164256661339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82128330659 + 82128330660.

It is an arithmetic number, because the mean of its divisors is an integer number (82128330660).

Almost surely, 2^164256661319 is an apocalyptic number.

164256661319 is a deficient number, since it is larger than the sum of its proper divisors (1).

164256661319 is an equidigital number, since it uses as much as digits as its factorization.

164256661319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 50.

The spelling of 164256661319 in words is "one hundred sixty-four billion, two hundred fifty-six million, six hundred sixty-one thousand, three hundred nineteen".