649522558899 has 12 divisors (see below), whose sum is σ = 993387443256. Its totient is φ = 407543566272.

The previous prime is 649522558847. The next prime is 649522558999. The reversal of 649522558899 is 998855225946.

649522558899 is a `hidden beast` number, since 6 + 4 + 9 + 522 + 5 + 5 + 8 + 8 + 99 = 666.

It is not a de Polignac number, because 649522558899 - 2⁷ = 649522558771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (649522558099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2122622589 + ... + 2122622894.

It is an arithmetic number, because the mean of its divisors is an integer number (82782286938).

Almost surely, 2^649522558899 is an apocalyptic number.

649522558899 is a deficient number, since it is larger than the sum of its proper divisors (343864884357).

649522558899 is a wasteful number, since it uses less digits than its factorization.

649522558899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245245506 (or 4245245503 counting only the distinct ones).

The product of its digits is 559872000, while the sum is 72.

The spelling of 649522558899 in words is "six hundred forty-nine billion, five hundred twenty-two million, five hundred fifty-eight thousand, eight hundred ninety-nine".