165454728943 has 4 divisors (see below), whose sum is σ = 189091118800. Its totient is φ = 141818339088.

The previous prime is 165454728931. The next prime is 165454728977. The reversal of 165454728943 is 349827454561.

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 165454728943 - 2²⁹ = 164917858031 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 (165454728983) 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, 11818194918 + ... + 11818194931.

It is an arithmetic number, because the mean of its divisors is an integer number (47272779700).

Almost surely, 2^165454728943 is an apocalyptic number.

165454728943 is a deficient number, since it is larger than the sum of its proper divisors (23636389857).

165454728943 is an equidigital number, since it uses as much as digits as its factorization.

165454728943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23636389856.

The product of its digits is 29030400, while the sum is 58.

The spelling of 165454728943 in words is "one hundred sixty-five billion, four hundred fifty-four million, seven hundred twenty-eight thousand, nine hundred forty-three".