665162011125312 has 112 divisors (see below), whose sum is σ = 1773043135290432. Its totient is φ = 220071968112640.

The previous prime is 665162011125277. The next prime is 665162011125373. The reversal of 665162011125312 is 213521110261566.

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, 10120278 + ... + 37851605.

Almost surely, 2^{665162011125312} is an apocalyptic number.

It is an amenable number.

665162011125312 is an abundant number, since it is smaller than the sum of its proper divisors (1107881124165120).

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

665162011125312 is a wasteful number, since it uses less digits than its factorization.

665162011125312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47972436 (or 47972426 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

Adding to 665162011125312 its reverse (213521110261566), we get a palindrome (878683121386878).

The spelling of 665162011125312 in words is "six hundred sixty-five trillion, one hundred sixty-two billion, eleven million, one hundred twenty-five thousand, three hundred twelve".