648663434494 has 8 divisors (see below), whose sum is σ = 983026029888. Its totient is φ = 320988091200.

The previous prime is 648663434479. The next prime is 648663434521. The reversal of 648663434494 is 494434366846.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1671812782 + ... + 1671813169.

It is an arithmetic number, because the mean of its divisors is an integer number (122878253736).

Almost surely, 2^648663434494 is an apocalyptic number.

648663434494 is a deficient number, since it is larger than the sum of its proper divisors (334362595394).

648663434494 is a wasteful number, since it uses less digits than its factorization.

648663434494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3343626050.

The product of its digits is 143327232, while the sum is 61.

The spelling of 648663434494 in words is "six hundred forty-eight billion, six hundred sixty-three million, four hundred thirty-four thousand, four hundred ninety-four".