165043423215 has 48 divisors (see below), whose sum is σ = 314070041376. Its totient is φ = 79511328000.

The previous prime is 165043423211. The next prime is 165043423231. The reversal of 165043423215 is 512324340561.

165043423215 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 434 + 2 + 3 + 215 = 666.

It is not a de Polignac number, because 165043423215 - 2² = 165043423211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165043423215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165043423211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 984136 + ... + 1139565.

It is an arithmetic number, because the mean of its divisors is an integer number (6543125862).

Almost surely, 2^165043423215 is an apocalyptic number.

165043423215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165043423215 is a deficient number, since it is larger than the sum of its proper divisors (149026618161).

165043423215 is a wasteful number, since it uses less digits than its factorization.

165043423215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123880 (or 2123877 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 165043423215 its reverse (512324340561), we get a palindrome (677367763776).

The spelling of 165043423215 in words is "one hundred sixty-five billion, forty-three million, four hundred twenty-three thousand, two hundred fifteen".