650725705161 has 40 divisors (see below), whose sum is σ = 1111962199040. Its totient is φ = 371500826112.

The previous prime is 650725705121. The next prime is 650725705199. The reversal of 650725705161 is 161507527056.

650725705161 is a `hidden beast` number, since 6 + 5 + 0 + 72 + 570 + 5 + 1 + 6 + 1 = 666.

It is not a de Polignac number, because 650725705161 - 2²⁷ = 650591487433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (650725705121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 88425 + ... + 1144233.

It is an arithmetic number, because the mean of its divisors is an integer number (27799054976).

Almost surely, 2^650725705161 is an apocalyptic number.

It is an amenable number.

650725705161 is a deficient number, since it is larger than the sum of its proper divisors (461236493879).

650725705161 is a wasteful number, since it uses less digits than its factorization.

650725705161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056915 (or 1056906 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 45.

The spelling of 650725705161 in words is "six hundred fifty billion, seven hundred twenty-five million, seven hundred five thousand, one hundred sixty-one".