648016331201 has 4 divisors (see below), whose sum is σ = 648242834004. Its totient is φ = 647789828400.

The previous prime is 648016331177. The next prime is 648016331213. The reversal of 648016331201 is 102133610846.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141207602176 + 506808729025 = 375776^2 + 711905^2 .

It is a cyclic number.

It is not a de Polignac number, because 648016331201 - 2²² = 648012136897 is a prime.

It is a super-2 number, since 2×648016331201² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648016333201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113247110 + ... + 113252831.

It is an arithmetic number, because the mean of its divisors is an integer number (162060708501).

Almost surely, 2^648016331201 is an apocalyptic number.

It is an amenable number.

648016331201 is a deficient number, since it is larger than the sum of its proper divisors (226502803).

648016331201 is a wasteful number, since it uses less digits than its factorization.

648016331201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226502802.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 648016331201 in words is "six hundred forty-eight billion, sixteen million, three hundred thirty-one thousand, two hundred one".