161502656650 has 24 divisors (see below), whose sum is σ = 303053314284. Its totient is φ = 64029369600.

The previous prime is 161502656647. The next prime is 161502656701. The reversal of 161502656650 is 56656205161.

161502656650 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 854802169 + 160647854481 = 29237^2 + 400809^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161502656597 and 161502656606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14286621 + ... + 14297920.

Almost surely, 2^161502656650 is an apocalyptic number.

161502656650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161502656650 is a deficient number, since it is larger than the sum of its proper divisors (141550657634).

161502656650 is a wasteful number, since it uses less digits than its factorization.

161502656650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28584666 (or 28584661 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 161502656650 in words is "one hundred sixty-one billion, five hundred two million, six hundred fifty-six thousand, six hundred fifty".