165121309248 has 112 divisors (see below), whose sum is σ = 504239320704. Its totient is φ = 46710374400.

The previous prime is 165121309231. The next prime is 165121309271. The reversal of 165121309248 is 842903121561.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 472465 + ... + 743952.

It is an arithmetic number, because the mean of its divisors is an integer number (4502136792).

Almost surely, 2^165121309248 is an apocalyptic number.

It is an amenable number.

165121309248 is an abundant number, since it is smaller than the sum of its proper divisors (339118011456).

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

165121309248 is a wasteful number, since it uses less digits than its factorization.

165121309248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216540 (or 1216530 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 165121309248 in words is "one hundred sixty-five billion, one hundred twenty-one million, three hundred nine thousand, two hundred forty-eight".