649052694576 has 640 divisors, whose sum is σ = 2278814146560. Its totient is φ = 175633920000.

The previous prime is 649052694523. The next prime is 649052694581. The reversal of 649052694576 is 675496250946.

649052694576 is a `hidden beast` number, since 6 + 4 + 9 + 0 + 52 + 6 + 9 + 4 + 576 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 231720376 + ... + 231723176.

It is an arithmetic number, because the mean of its divisors is an integer number (3560647104).

Almost surely, 2^649052694576 is an apocalyptic number.

649052694576 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649052694576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1139407073280).

649052694576 is an abundant number, since it is smaller than the sum of its proper divisors (1629761451984).

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

649052694576 is a wasteful number, since it uses less digits than its factorization.

649052694576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895 (or 2861 counting only the distinct ones).

The product of its (nonzero) digits is 97977600, while the sum is 63.

The spelling of 649052694576 in words is "six hundred forty-nine billion, fifty-two million, six hundred ninety-four thousand, five hundred seventy-six".