165516156105 has 16 divisors (see below), whose sum is σ = 267255447360. Its totient is φ = 87465417408.

The previous prime is 165516156101. The next prime is 165516156131. The reversal of 165516156105 is 501651615561.

It is not a de Polignac number, because 165516156105 - 2² = 165516156101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165516156101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50614927 + ... + 50618196.

It is an arithmetic number, because the mean of its divisors is an integer number (16703465460).

Almost surely, 2^165516156105 is an apocalyptic number.

165516156105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165516156105 is a deficient number, since it is larger than the sum of its proper divisors (101739291255).

165516156105 is a wasteful number, since it uses less digits than its factorization.

165516156105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101233240.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 165516156105 in words is "one hundred sixty-five billion, five hundred sixteen million, one hundred fifty-six thousand, one hundred five".