165151312230320 has 80 divisors (see below), whose sum is σ = 417378090155040. Its totient is φ = 60409049321472.

The previous prime is 165151312230259. The next prime is 165151312230337. The reversal of 165151312230320 is 23032213151561.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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, 741941705 + ... + 742164264.

It is an arithmetic number, because the mean of its divisors is an integer number (5217226126938).

Almost surely, 2^{165151312230320} is an apocalyptic number.

165151312230320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165151312230320 is an abundant number, since it is smaller than the sum of its proper divisors (252226777924720).

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

165151312230320 is a wasteful number, since it uses less digits than its factorization.

165151312230320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484106102 (or 1484106096 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 165151312230320 its reverse (23032213151561), we get a palindrome (188183525381881).

The spelling of 165151312230320 in words is "one hundred sixty-five trillion, one hundred fifty-one billion, three hundred twelve million, two hundred thirty thousand, three hundred twenty".