165335405624 has 8 divisors (see below), whose sum is σ = 310003885560. Its totient is φ = 82667702808.

The previous prime is 165335405621. The next prime is 165335405633. The reversal of 165335405624 is 426504533561.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×165335405624² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165335405621) 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 as a sum of consecutive naturals, namely, 10333462844 + ... + 10333462859.

It is an arithmetic number, because the mean of its divisors is an integer number (38750485695).

Almost surely, 2^165335405624 is an apocalyptic number.

It is an amenable number.

165335405624 is a deficient number, since it is larger than the sum of its proper divisors (144668479936).

165335405624 is a wasteful number, since it uses less digits than its factorization.

165335405624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20666925709 (or 20666925705 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 165335405624 in words is "one hundred sixty-five billion, three hundred thirty-five million, four hundred five thousand, six hundred twenty-four".