165142087658 has 16 divisors (see below), whose sum is σ = 256378594560. Its totient is φ = 79696612800.

The previous prime is 165142087657. The next prime is 165142087699. The reversal of 165142087658 is 856780241561.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (165142087657) 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, 3490463 + ... + 3537458.

It is an arithmetic number, because the mean of its divisors is an integer number (16023662160).

Almost surely, 2^165142087658 is an apocalyptic number.

165142087658 is a deficient number, since it is larger than the sum of its proper divisors (91236506902).

165142087658 is a wasteful number, since it uses less digits than its factorization.

165142087658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7028333.

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 165142087658 in words is "one hundred sixty-five billion, one hundred forty-two million, eighty-seven thousand, six hundred fifty-eight".