649028064909 has 8 divisors (see below), whose sum is σ = 988995146560. Its totient is φ = 370873179936.

The previous prime is 649028064907. The next prime is 649028064911. The reversal of 649028064909 is 909460820946.

649028064909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (649028064907) and next prime (649028064911).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 649028064909 - 2¹ = 649028064907 is a prime.

It is a super-2 number, since 2×649028064909² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649028064907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15453049144 + ... + 15453049185.

It is an arithmetic number, because the mean of its divisors is an integer number (123624393320).

Almost surely, 2^649028064909 is an apocalyptic number.

It is an amenable number.

649028064909 is a deficient number, since it is larger than the sum of its proper divisors (339967081651).

649028064909 is a wasteful number, since it uses less digits than its factorization.

649028064909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30906098339.

The product of its (nonzero) digits is 6718464, while the sum is 57.

The spelling of 649028064909 in words is "six hundred forty-nine billion, twenty-eight million, sixty-four thousand, nine hundred nine".