165411770112 has 144 divisors (see below), whose sum is σ = 504931445760. Its totient is φ = 53358566400.

The previous prime is 165411770101. The next prime is 165411770129. The reversal of 165411770112 is 211077114561.

165411770112 is a `hidden beast` number, since 1 + 65 + 411 + 7 + 70 + 112 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×165411770112² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171714 + ... + 600257.

Almost surely, 2^165411770112 is an apocalyptic number.

165411770112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165411770112 is an abundant number, since it is smaller than the sum of its proper divisors (339519675648).

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

165411770112 is an equidigital number, since it uses as much as digits as its factorization.

165411770112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772027 (or 772007 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 36.

Adding to 165411770112 its reverse (211077114561), we get a palindrome (376488884673).

The spelling of 165411770112 in words is "one hundred sixty-five billion, four hundred eleven million, seven hundred seventy thousand, one hundred twelve".