165388876379 has 2 divisors, whose sum is σ = 165388876380. Its totient is φ = 165388876378.

The previous prime is 165388876343. The next prime is 165388876397. The reversal of 165388876379 is 973678883561.

It is a happy number.

Together with next prime (165388876397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165388876379 is a prime.

It is not a weakly prime, because it can be changed into another prime (165388876339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82694438189 + 82694438190.

It is an arithmetic number, because the mean of its divisors is an integer number (82694438190).

Almost surely, 2^165388876379 is an apocalyptic number.

165388876379 is a deficient number, since it is larger than the sum of its proper divisors (1).

165388876379 is an equidigital number, since it uses as much as digits as its factorization.

165388876379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 365783040, while the sum is 71.

The spelling of 165388876379 in words is "one hundred sixty-five billion, three hundred eighty-eight million, eight hundred seventy-six thousand, three hundred seventy-nine".