165140221343 has 8 divisors (see below), whose sum is σ = 175926172800. Its totient is φ = 154563706008.

The previous prime is 165140221319. The next prime is 165140221403. The reversal of 165140221343 is 343122041561.

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

It is a cyclic number.

It is not a de Polignac number, because 165140221343 - 2⁸ = 165140221087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165140221643) 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, 52357403 + ... + 52360556.

It is an arithmetic number, because the mean of its divisors is an integer number (21990771600).

Almost surely, 2^165140221343 is an apocalyptic number.

165140221343 is a deficient number, since it is larger than the sum of its proper divisors (10785951457).

165140221343 is a wasteful number, since it uses less digits than its factorization.

165140221343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104718061.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 165140221343 in words is "one hundred sixty-five billion, one hundred forty million, two hundred twenty-one thousand, three hundred forty-three".