648251482409 has 8 divisors (see below), whose sum is σ = 654747692040. Its totient is φ = 641756800000.

The previous prime is 648251482391. The next prime is 648251482507. The reversal of 648251482409 is 904284152846.

648251482409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6605625625 + 641645856784 = 81275^2 + 801028^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 648251482409 - 2²⁴ = 648234705193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648251412409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481097 + ... + 1236105.

It is an arithmetic number, because the mean of its divisors is an integer number (81843461505).

Almost surely, 2^648251482409 is an apocalyptic number.

It is an amenable number.

648251482409 is a deficient number, since it is larger than the sum of its proper divisors (6496209631).

648251482409 is a wasteful number, since it uses less digits than its factorization.

648251482409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763611.

The product of its (nonzero) digits is 4423680, while the sum is 53.

The spelling of 648251482409 in words is "six hundred forty-eight billion, two hundred fifty-one million, four hundred eighty-two thousand, four hundred nine".