165199023360 has 1296 divisors, whose sum is σ = 712833226560. Its totient is φ = 35115171840.

The previous prime is 165199023349. The next prime is 165199023389. The reversal of 165199023360 is 63320991561.

165199023360 is a `hidden beast` number, since 16 + 519 + 90 + 2 + 3 + 36 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 782933655 + ... + 782933865.

Almost surely, 2^165199023360 is an apocalyptic number.

165199023360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165199023360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356416613280).

165199023360 is an abundant number, since it is smaller than the sum of its proper divisors (547634203200).

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

165199023360 is a wasteful number, since it uses less digits than its factorization.

165199023360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The spelling of 165199023360 in words is "one hundred sixty-five billion, one hundred ninety-nine million, twenty-three thousand, three hundred sixty".