39649912216 has 16 divisors (see below), whose sum is σ = 74364885000. Its totient is φ = 19819276224.

The previous prime is 39649912207. The next prime is 39649912219. The reversal of 39649912216 is 61221994693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39649912219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680245 + ... + 736228.

Almost surely, 2^39649912216 is an apocalyptic number.

It is an amenable number.

39649912216 is a deficient number, since it is larger than the sum of its proper divisors (34714972784).

39649912216 is a wasteful number, since it uses less digits than its factorization.

39649912216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419978 (or 1419974 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 52.

The spelling of 39649912216 in words is "thirty-nine billion, six hundred forty-nine million, nine hundred twelve thousand, two hundred sixteen".