165655210016010 has 192 divisors, whose sum is σ = 469951549180416. Its totient is φ = 37045465516800.

The previous prime is 165655210015987. The next prime is 165655210016029. The reversal of 165655210016010 is 10610012556561.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 165655210016010.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 84413809 + ... + 86353931.

It is an arithmetic number, because the mean of its divisors is an integer number (2447664318648).

Almost surely, 2^{165655210016010} is an apocalyptic number.

165655210016010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 165655210016010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234975774590208).

165655210016010 is an abundant number, since it is smaller than the sum of its proper divisors (304296339164406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165655210016010 is a wasteful number, since it uses less digits than its factorization.

165655210016010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941701 (or 1941688 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 39.

The spelling of 165655210016010 in words is "one hundred sixty-five trillion, six hundred fifty-five billion, two hundred ten million, sixteen thousand, ten".