648912584093851 has 96 divisors (see below), whose sum is σ = 854991171256320. Its totient is φ = 490730157456000.

The previous prime is 648912584093773. The next prime is 648912584093861. The reversal of 648912584093851 is 158390485219846.

It is a happy number.

It is not a de Polignac number, because 648912584093851 - 2⁹ = 648912584093339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (648912584093861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 510094710 + ... + 511365268.

It is an arithmetic number, because the mean of its divisors is an integer number (8906158033920).

Almost surely, 2^{648912584093851} is an apocalyptic number.

648912584093851 is a deficient number, since it is larger than the sum of its proper divisors (206078587162469).

648912584093851 is a wasteful number, since it uses less digits than its factorization.

648912584093851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270838 (or 1270809 counting only the distinct ones).

The product of its (nonzero) digits is 597196800, while the sum is 73.

The spelling of 648912584093851 in words is "six hundred forty-eight trillion, nine hundred twelve billion, five hundred eighty-four million, ninety-three thousand, eight hundred fifty-one".