648058700161 has 4 divisors (see below), whose sum is σ = 648983178324. Its totient is φ = 647134222000.

The previous prime is 648058700143. The next prime is 648058700167. The reversal of 648058700161 is 161007850846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161007850846 = 2 ⋅80503925423.

It can be written as a sum of positive squares in 2 ways, for example, as 514205160561 + 133853539600 = 717081^2 + 365860^2 .

It is a cyclic number.

It is not a de Polignac number, because 648058700161 - 2¹⁷ = 648058569089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648058700167) 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 3 ways as a sum of consecutive naturals, for example, 462238030 + ... + 462239431.

It is an arithmetic number, because the mean of its divisors is an integer number (162245794581).

Almost surely, 2^648058700161 is an apocalyptic number.

It is an amenable number.

648058700161 is a deficient number, since it is larger than the sum of its proper divisors (924478163).

648058700161 is an equidigital number, since it uses as much as digits as its factorization.

648058700161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924478162.

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 648058700161 in words is "six hundred forty-eight billion, fifty-eight million, seven hundred thousand, one hundred sixty-one".