165156550560154 has 4 divisors (see below), whose sum is σ = 247734825840234. Its totient is φ = 82578275280076.

The previous prime is 165156550560143. The next prime is 165156550560173. The reversal of 165156550560154 is 451065055651561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 147357627419025 + 17798923141129 = 12139095^2 + 4218877^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165156550560095 and 165156550560104.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41289137640037 + ... + 41289137640040.

Almost surely, 2^{165156550560154} is an apocalyptic number.

165156550560154 is a deficient number, since it is larger than the sum of its proper divisors (82578275280080).

165156550560154 is an equidigital number, since it uses as much as digits as its factorization.

165156550560154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82578275280079.

The product of its (nonzero) digits is 13500000, while the sum is 55.

The spelling of 165156550560154 in words is "one hundred sixty-five trillion, one hundred fifty-six billion, five hundred fifty million, five hundred sixty thousand, one hundred fifty-four".