649867196160 has 2592 divisors, whose sum is σ = 3053441664000. Its totient is φ = 126080188416.

The previous prime is 649867196117. The next prime is 649867196161. The reversal of 649867196160 is 61691768946.

649867196160 is a `hidden beast` number, since 6 + 4 + 9 + 8 + 6 + 7 + 1 + 9 + 616 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649867196161) by changing a digit.

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 287 ways as a sum of consecutive naturals, for example, 8226167001 + ... + 8226167079.

Almost surely, 2^649867196160 is an apocalyptic number.

649867196160 is a gapful number since it is divisible by the number (60) 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 649867196160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1526720832000).

649867196160 is an abundant number, since it is smaller than the sum of its proper divisors (2403574467840).

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

649867196160 is a wasteful number, since it uses less digits than its factorization.

649867196160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 649867196160 in words is "six hundred forty-nine billion, eight hundred sixty-seven million, one hundred ninety-six thousand, one hundred sixty".