648297192745 has 16 divisors (see below), whose sum is σ = 824653862928. Its totient is φ = 487575531520.

The previous prime is 648297192727. The next prime is 648297192749. The reversal of 648297192745 is 547291792846.

It can be written as a sum of positive squares in 8 ways, for example, as 277022736 + 648020170009 = 16644^2 + 804997^2 .

It is not a de Polignac number, because 648297192745 - 2⁷ = 648297192617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648297192749) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4253734 + ... + 4403503.

It is an arithmetic number, because the mean of its divisors is an integer number (51540866433).

Almost surely, 2^648297192745 is an apocalyptic number.

It is an amenable number.

648297192745 is a deficient number, since it is larger than the sum of its proper divisors (176356670183).

648297192745 is a wasteful number, since it uses less digits than its factorization.

648297192745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8658140.

The product of its digits is 60963840, while the sum is 64.

The spelling of 648297192745 in words is "six hundred forty-eight billion, two hundred ninety-seven million, one hundred ninety-two thousand, seven hundred forty-five".