165145661506654 has 16 divisors (see below), whose sum is σ = 262290414808656. Its totient is φ = 77715532368000.

The previous prime is 165145661506613. The next prime is 165145661506663. The reversal of 165145661506654 is 456605166541561.

It is a junction number, because it is equal to n+sod(n) for n = 165145661506592 and 165145661506601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55956769 + ... + 58834099.

It is an arithmetic number, because the mean of its divisors is an integer number (16393150925541).

Almost surely, 2^{165145661506654} is an apocalyptic number.

165145661506654 is a deficient number, since it is larger than the sum of its proper divisors (97144753302002).

165145661506654 is a wasteful number, since it uses less digits than its factorization.

165145661506654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565451.

The product of its (nonzero) digits is 77760000, while the sum is 61.

The spelling of 165145661506654 in words is "one hundred sixty-five trillion, one hundred forty-five billion, six hundred sixty-one million, five hundred six thousand, six hundred fifty-four".