165120450666532 has 12 divisors (see below), whose sum is σ = 289154852336140. Its totient is φ = 82504778570496.

The previous prime is 165120450666529. The next prime is 165120450666541. The reversal of 165120450666532 is 235666054021561.

It can be written as a sum of positive squares in 2 ways, for example, as 16809557202916 + 148310893463616 = 4099946^2 + 12178296^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 165120450666532.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13861683993 + ... + 13861695904.

Almost surely, 2^{165120450666532} is an apocalyptic number.

It is an amenable number.

165120450666532 is a deficient number, since it is larger than the sum of its proper divisors (124034401669608).

165120450666532 is a wasteful number, since it uses less digits than its factorization.

165120450666532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27723381390 (or 27723381388 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 52.

The spelling of 165120450666532 in words is "one hundred sixty-five trillion, one hundred twenty billion, four hundred fifty million, six hundred sixty-six thousand, five hundred thirty-two".