165755749964 has 48 divisors (see below), whose sum is σ = 343133306880. Its totient is φ = 68550511680.

The previous prime is 165755749963. The next prime is 165755750023. The reversal of 165755749964 is 469947557561.

It is a happy number.

It is a super-2 number, since 2×165755749964² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165755749894 and 165755749903.

It is not an unprimeable number, because it can be changed into a prime (165755749963) 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, 1431029 + ... + 1542515.

It is an arithmetic number, because the mean of its divisors is an integer number (7148610560).

Almost surely, 2^165755749964 is an apocalyptic number.

165755749964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

165755749964 is an abundant number, since it is smaller than the sum of its proper divisors (177377556916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165755749964 is a wasteful number, since it uses less digits than its factorization.

165755749964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113358 (or 113356 counting only the distinct ones).

The product of its digits is 285768000, while the sum is 68.

The spelling of 165755749964 in words is "one hundred sixty-five billion, seven hundred fifty-five million, seven hundred forty-nine thousand, nine hundred sixty-four".