165004014621 has 8 divisors (see below), whose sum is σ = 220013246304. Its totient is φ = 109998729680.

The previous prime is 165004014613. The next prime is 165004014649. The reversal of 165004014621 is 126410400561.

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 165004014621 - 2³ = 165004014613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165004014671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887715 + ... + 1057376.

It is an arithmetic number, because the mean of its divisors is an integer number (27501655788).

Almost surely, 2^165004014621 is an apocalyptic number.

It is an amenable number.

165004014621 is a deficient number, since it is larger than the sum of its proper divisors (55009231683).

165004014621 is a wasteful number, since it uses less digits than its factorization.

165004014621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973371.

The product of its (nonzero) digits is 5760, while the sum is 30.

It can be divided in two parts, 1650040 and 14621, that added together give a palindrome (1664661).

The spelling of 165004014621 in words is "one hundred sixty-five billion, four million, fourteen thousand, six hundred twenty-one".