165215132456500 has 48 divisors (see below), whose sum is σ = 412376970620160. Its totient is φ = 56645188269600.

The previous prime is 165215132456483. The next prime is 165215132456501. The reversal of 165215132456500 is 5654231512561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165215132456501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23602158280 + ... + 23602165279.

It is an arithmetic number, because the mean of its divisors is an integer number (8591186887920).

Almost surely, 2^{165215132456500} is an apocalyptic number.

165215132456500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165215132456500 is an abundant number, since it is smaller than the sum of its proper divisors (247161838163660).

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

165215132456500 is a wasteful number, since it uses less digits than its factorization.

165215132456500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47204323585 (or 47204323573 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 165215132456500 in words is "one hundred sixty-five trillion, two hundred fifteen billion, one hundred thirty-two million, four hundred fifty-six thousand, five hundred".