165626145625650 has 96 divisors (see below), whose sum is σ = 424031625715200. Its totient is φ = 42739338700800.

The previous prime is 165626145625609. The next prime is 165626145625657. The reversal of 165626145625650 is 56526541626561.

165626145625650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165626145625650² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165626145625657) 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, 67943106 + ... + 70338594.

It is an arithmetic number, because the mean of its divisors is an integer number (4416996101200).

Almost surely, 2^{165626145625650} is an apocalyptic number.

165626145625650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165626145625650 is an abundant number, since it is smaller than the sum of its proper divisors (258405480089550).

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

165626145625650 is a wasteful number, since it uses less digits than its factorization.

165626145625650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410404 (or 2410399 counting only the distinct ones).

The product of its (nonzero) digits is 77760000, while the sum is 60.

The spelling of 165626145625650 in words is "one hundred sixty-five trillion, six hundred twenty-six billion, one hundred forty-five million, six hundred twenty-five thousand, six hundred fifty".