649026214609 has 4 divisors (see below), whose sum is σ = 658713173104. Its totient is φ = 639339256116.

The previous prime is 649026214559. The next prime is 649026214621. The reversal of 649026214609 is 906412620946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 649026214609 - 2¹¹ = 649026212561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649026614609) 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, 4843479147 + ... + 4843479280.

It is an arithmetic number, because the mean of its divisors is an integer number (164678293276).

Almost surely, 2^649026214609 is an apocalyptic number.

It is an amenable number.

649026214609 is a deficient number, since it is larger than the sum of its proper divisors (9686958495).

649026214609 is an equidigital number, since it uses as much as digits as its factorization.

649026214609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9686958494.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 649026214609 in words is "six hundred forty-nine billion, twenty-six million, two hundred fourteen thousand, six hundred nine".