648666430266 has 32 divisors (see below), whose sum is σ = 1318664850048. Its totient is φ = 212667157440.

The previous prime is 648666430259. The next prime is 648666430277. The reversal of 648666430266 is 662034666846.

It is an unprimeable number.

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, 12275995 + ... + 12328721.

It is an arithmetic number, because the mean of its divisors is an integer number (41208276564).

Almost surely, 2^648666430266 is an apocalyptic number.

648666430266 is an abundant number, since it is smaller than the sum of its proper divisors (669998419782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648666430266 is a wasteful number, since it uses less digits than its factorization.

648666430266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86406.

The product of its (nonzero) digits is 35831808, while the sum is 57.

The spelling of 648666430266 in words is "six hundred forty-eight billion, six hundred sixty-six million, four hundred thirty thousand, two hundred sixty-six".