165215132455279 has 2 divisors, whose sum is σ = 165215132455280. Its totient is φ = 165215132455278.

The previous prime is 165215132455271. The next prime is 165215132455343. The reversal of 165215132455279 is 972554231512561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165215132455279 - 2³ = 165215132455271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165215132455271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82607566227639 + 82607566227640.

It is an arithmetic number, because the mean of its divisors is an integer number (82607566227640).

Almost surely, 2^{165215132455279} is an apocalyptic number.

165215132455279 is a deficient number, since it is larger than the sum of its proper divisors (1).

165215132455279 is an equidigital number, since it uses as much as digits as its factorization.

165215132455279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680000, while the sum is 58.

The spelling of 165215132455279 in words is "one hundred sixty-five trillion, two hundred fifteen billion, one hundred thirty-two million, four hundred fifty-five thousand, two hundred seventy-nine".