165140004 has 12 divisors (see below), whose sum is σ = 385326704. Its totient is φ = 55046664.

The previous prime is 165139987. The next prime is 165140011. The reversal of 165140004 is 400041561.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×165140004² = 54542441842240032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6880822 + ... + 6880845.

Almost surely, 2^165140004 is an apocalyptic number.

It is an amenable number.

165140004 is an abundant number, since it is smaller than the sum of its proper divisors (220186700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165140004 is a wasteful number, since it uses less digits than its factorization.

165140004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13761674 (or 13761672 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 165140004 is about 12850.6810714452. The cubic root of 165140004 is about 548.6357416615.

Adding to 165140004 its reverse (400041561), we get a palindrome (565181565).

The spelling of 165140004 in words is "one hundred sixty-five million, one hundred forty thousand, four".