6649000072281 has 12 divisors (see below), whose sum is σ = 10976127103552. Its totient is φ = 3799428612696.

The previous prime is 6649000072243. The next prime is 6649000072357. The reversal of 6649000072281 is 1822700009466.

It is a happy number.

6649000072281 is a `hidden beast` number, since 66 + 490 + 0 + 0 + 0 + 7 + 22 + 81 = 666.

It is not a de Polignac number, because 6649000072281 - 2¹⁰ = 6649000071257 is a prime.

It is a super-2 number, since 2×6649000072281² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6649000072181) 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, 52769841781 + ... + 52769841906.

Almost surely, 2^{6649000072281} is an apocalyptic number.

It is an amenable number.

6649000072281 is a deficient number, since it is larger than the sum of its proper divisors (4327127031271).

6649000072281 is a wasteful number, since it uses less digits than its factorization.

6649000072281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105539683700 (or 105539683697 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 6649000072281 in words is "six trillion, six hundred forty-nine billion, seventy-two thousand, two hundred eighty-one".