164159815639 has 2 divisors, whose sum is σ = 164159815640. Its totient is φ = 164159815638.

The previous prime is 164159815637. The next prime is 164159815723. The reversal of 164159815639 is 936518951461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164159815639 - 2¹ = 164159815637 is a prime.

Together with 164159815637, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164159815637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82079907819 + 82079907820.

It is an arithmetic number, because the mean of its divisors is an integer number (82079907820).

Almost surely, 2^164159815639 is an apocalyptic number.

164159815639 is a deficient number, since it is larger than the sum of its proper divisors (1).

164159815639 is an equidigital number, since it uses as much as digits as its factorization.

164159815639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6998400, while the sum is 58.

The spelling of 164159815639 in words is "one hundred sixty-four billion, one hundred fifty-nine million, eight hundred fifteen thousand, six hundred thirty-nine".