649299012480 has 768 divisors, whose sum is σ = 2399879664000. Its totient is φ = 161462353920.

The previous prime is 649299012433. The next prime is 649299012497. The reversal of 649299012480 is 84210992946.

649299012480 is a `hidden beast` number, since 6 + 49 + 29 + 90 + 12 + 480 = 666.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 773895901 + ... + 773896739.

Almost surely, 2^649299012480 is an apocalyptic number.

649299012480 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 649299012480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1199939832000).

649299012480 is an abundant number, since it is smaller than the sum of its proper divisors (1750580651520).

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

649299012480 is a wasteful number, since it uses less digits than its factorization.

649299012480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047 (or 1032 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 649299012480 in words is "six hundred forty-nine billion, two hundred ninety-nine million, twelve thousand, four hundred eighty".