649351509336 has 96 divisors (see below), whose sum is σ = 1865771107200. Its totient is φ = 203317693440.

The previous prime is 649351509307. The next prime is 649351509347. The reversal of 649351509336 is 633905153946.

649351509336 is a `hidden beast` number, since 6 + 4 + 9 + 3 + 515 + 0 + 93 + 36 = 666.

649351509336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101881 + ... + 1144151.

It is an arithmetic number, because the mean of its divisors is an integer number (19435115700).

Almost surely, 2^649351509336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649351509336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932885553600).

649351509336 is an abundant number, since it is smaller than the sum of its proper divisors (1216419597864).

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

649351509336 is a wasteful number, since it uses less digits than its factorization.

649351509336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042809 (or 1042802 counting only the distinct ones).

The product of its (nonzero) digits is 7873200, while the sum is 54.

The spelling of 649351509336 in words is "six hundred forty-nine billion, three hundred fifty-one million, five hundred nine thousand, three hundred thirty-six".