165126424003 has 4 divisors (see below), whose sum is σ = 174839743080. Its totient is φ = 155413104928.

The previous prime is 165126423983. The next prime is 165126424007. The reversal of 165126424003 is 300424621561.

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

It is a cyclic number.

It is not a de Polignac number, because 165126424003 - 2¹⁷ = 165126292931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165126424003.

It is not an unprimeable number, because it can be changed into a prime (165126424007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4856659513 + ... + 4856659546.

It is an arithmetic number, because the mean of its divisors is an integer number (43709935770).

Almost surely, 2^165126424003 is an apocalyptic number.

165126424003 is a deficient number, since it is larger than the sum of its proper divisors (9713319077).

165126424003 is an equidigital number, since it uses as much as digits as its factorization.

165126424003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9713319076.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 165126424003 in words is "one hundred sixty-five billion, one hundred twenty-six million, four hundred twenty-four thousand, three".