165055156500550 has 12 divisors (see below), whose sum is σ = 307002591091116. Its totient is φ = 66022062600200.

The previous prime is 165055156500497. The next prime is 165055156500613. The reversal of 165055156500550 is 55005651550561.

It is a junction number, because it is equal to n+sod(n) for n = 165055156500494 and 165055156500503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1650551564956 + ... + 1650551565055.

It is an arithmetic number, because the mean of its divisors is an integer number (25583549257593).

Almost surely, 2^{165055156500550} is an apocalyptic number.

165055156500550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165055156500550 is a deficient number, since it is larger than the sum of its proper divisors (141947434590566).

165055156500550 is a wasteful number, since it uses less digits than its factorization.

165055156500550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301103130023 (or 3301103130018 counting only the distinct ones).

The product of its (nonzero) digits is 2812500, while the sum is 49.

The spelling of 165055156500550 in words is "one hundred sixty-five trillion, fifty-five billion, one hundred fifty-six million, five hundred thousand, five hundred fifty".