165006151516661 has 8 divisors (see below), whose sum is σ = 203084494174464. Its totient is φ = 130554317683440.

The previous prime is 165006151516651. The next prime is 165006151516699. The reversal of 165006151516661 is 166615151600561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-165006151516661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165006151516651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 906627206045 + ... + 906627206226.

It is an arithmetic number, because the mean of its divisors is an integer number (25385561771808).

Almost surely, 2^{165006151516661} is an apocalyptic number.

It is an amenable number.

165006151516661 is a deficient number, since it is larger than the sum of its proper divisors (38078342657803).

165006151516661 is a wasteful number, since it uses less digits than its factorization.

165006151516661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813254412291.

The product of its (nonzero) digits is 972000, while the sum is 50.

The spelling of 165006151516661 in words is "one hundred sixty-five trillion, six billion, one hundred fifty-one million, five hundred sixteen thousand, six hundred sixty-one".