2165148368528 has 10 divisors (see below), whose sum is σ = 4194974964054. Its totient is φ = 1082574184256.

The previous prime is 2165148368527. The next prime is 2165148368533. The reversal of 2165148368528 is 8258638415612.

It can be written as a sum of positive squares in only one way, i.e., 2162405542144 + 2742826384 = 1470512^2 + 52372^2 .

It is not an unprimeable number, because it can be changed into a prime (2165148368527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67660886501 + ... + 67660886532.

Almost surely, 2^{2165148368528} is an apocalyptic number.

It is an amenable number.

2165148368528 is a deficient number, since it is larger than the sum of its proper divisors (2029826595526).

2165148368528 is a wasteful number, since it uses less digits than its factorization.

2165148368528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135321773041 (or 135321773035 counting only the distinct ones).

The product of its digits is 22118400, while the sum is 59.

The spelling of 2165148368528 in words is "two trillion, one hundred sixty-five billion, one hundred forty-eight million, three hundred sixty-eight thousand, five hundred twenty-eight".