165641314104 has 144 divisors (see below), whose sum is σ = 544632613200. Its totient is φ = 44542162944.

The previous prime is 165641314051. The next prime is 165641314109. The reversal of 165641314104 is 401413146561.

165641314104 is a `hidden beast` number, since 1 + 6 + 5 + 641 + 3 + 1 + 4 + 1 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165641314109) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 422949 + ... + 714260.

It is an arithmetic number, because the mean of its divisors is an integer number (3782170925).

Almost surely, 2^165641314104 is an apocalyptic number.

165641314104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

165641314104 is an abundant number, since it is smaller than the sum of its proper divisors (378991299096).

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

165641314104 is a wasteful number, since it uses less digits than its factorization.

165641314104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137262 (or 1137238 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 165641314104 in words is "one hundred sixty-five billion, six hundred forty-one million, three hundred fourteen thousand, one hundred four".