648388303883846 has 8 divisors (see below), whose sum is σ = 975291599157840. Its totient is φ = 323291104164568.

The previous prime is 648388303883843. The next prime is 648388303883963.

648388303883846 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×648388303883846² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648388303883843) 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, 451523887781 + ... + 451523889216.

It is an arithmetic number, because the mean of its divisors is an integer number (121911449894730).

Almost surely, 2^{648388303883846} is an apocalyptic number.

648388303883846 is a deficient number, since it is larger than the sum of its proper divisors (326903295273994).

648388303883846 is a wasteful number, since it uses less digits than its factorization.

648388303883846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903047777358.

The product of its (nonzero) digits is 12230590464, while the sum is 80.

The spelling of 648388303883846 in words is "six hundred forty-eight trillion, three hundred eighty-eight billion, three hundred three million, eight hundred eighty-three thousand, eight hundred forty-six".