165134744643 has 16 divisors (see below), whose sum is σ = 244267113600. Its totient is φ = 98385362880.

The previous prime is 165134744639. The next prime is 165134744681. The reversal of 165134744643 is 346447431561.

It is a happy number.

It is not a de Polignac number, because 165134744643 - 2² = 165134744639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165134744592 and 165134744601.

It is not an unprimeable number, because it can be changed into a prime (165134744633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42405538 + ... + 42409431.

It is an arithmetic number, because the mean of its divisors is an integer number (15266694600).

Almost surely, 2^165134744643 is an apocalyptic number.

165134744643 is a deficient number, since it is larger than the sum of its proper divisors (79132368957).

165134744643 is a wasteful number, since it uses less digits than its factorization.

165134744643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84815042.

The product of its digits is 2903040, while the sum is 48.

The spelling of 165134744643 in words is "one hundred sixty-five billion, one hundred thirty-four million, seven hundred forty-four thousand, six hundred forty-three".