165968580312 has 32 divisors (see below), whose sum is σ = 461023834800. Its totient is φ = 55322860032.

The previous prime is 165968580307. The next prime is 165968580317. The reversal of 165968580312 is 213085869561.

165968580312 is a `hidden beast` number, since 1 + 6 + 59 + 6 + 8 + 580 + 3 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (165968580307) and next prime (165968580317).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165968580317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384186313 + ... + 384186744.

Almost surely, 2^165968580312 is an apocalyptic number.

165968580312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165968580312 is an abundant number, since it is smaller than the sum of its proper divisors (295055254488).

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

165968580312 is a wasteful number, since it uses less digits than its factorization.

165968580312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768373072 (or 768373062 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 165968580312 in words is "one hundred sixty-five billion, nine hundred sixty-eight million, five hundred eighty thousand, three hundred twelve".