649550137586 has 8 divisors (see below), whose sum is σ = 1113514521600. Its totient is φ = 278378630388.

The previous prime is 649550137559. The next prime is 649550137589. The reversal of 649550137586 is 685731055946.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (649550137589) 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 3 ways as a sum of consecutive naturals, for example, 23198219186 + ... + 23198219213.

It is an arithmetic number, because the mean of its divisors is an integer number (139189315200).

Almost surely, 2^649550137586 is an apocalyptic number.

649550137586 is a deficient number, since it is larger than the sum of its proper divisors (463964384014).

649550137586 is a wasteful number, since it uses less digits than its factorization.

649550137586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46396438408.

The product of its (nonzero) digits is 27216000, while the sum is 59.

The spelling of 649550137586 in words is "six hundred forty-nine billion, five hundred fifty million, one hundred thirty-seven thousand, five hundred eighty-six".