165215132455315 has 8 divisors (see below), whose sum is σ = 198264061620720. Its totient is φ = 132168170848032.

The previous prime is 165215132455279. The next prime is 165215132455343. The reversal of 165215132455315 is 513554231512561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165215132455315 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491704789 + ... + 492040678.

It is an arithmetic number, because the mean of its divisors is an integer number (24783007702590).

Almost surely, 2^{165215132455315} is an apocalyptic number.

165215132455315 is a deficient number, since it is larger than the sum of its proper divisors (33048929165405).

165215132455315 is an equidigital number, since it uses as much as digits as its factorization.

165215132455315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983779061.

The product of its digits is 2700000, while the sum is 49.

Adding to 165215132455315 its reverse (513554231512561), we get a palindrome (678769363967876).

The spelling of 165215132455315 in words is "one hundred sixty-five trillion, two hundred fifteen billion, one hundred thirty-two million, four hundred fifty-five thousand, three hundred fifteen".