165043324522550 has 24 divisors (see below), whose sum is σ = 307204167558816. Its totient is φ = 65969247239840.

The previous prime is 165043324522511. The next prime is 165043324522561. The reversal of 165043324522550 is 55225423340561.

It is a junction number, because it is equal to n+sod(n) for n = 165043324522495 and 165043324522504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1201994894 + ... + 1202132193.

It is an arithmetic number, because the mean of its divisors is an integer number (12800173648284).

Almost surely, 2^{165043324522550} is an apocalyptic number.

165043324522550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165043324522550 is a deficient number, since it is larger than the sum of its proper divisors (142160843036266).

165043324522550 is a wasteful number, since it uses less digits than its factorization.

165043324522550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404128472 (or 2404128467 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 47.

The spelling of 165043324522550 in words is "one hundred sixty-five trillion, forty-three billion, three hundred twenty-four million, five hundred twenty-two thousand, five hundred fifty".