39953908816 has 10 divisors (see below), whose sum is σ = 77410698362. Its totient is φ = 19976954400.

The previous prime is 39953908751. The next prime is 39953908837. The reversal of 39953908816 is 61880935993.

It can be written as a sum of positive squares in only one way, i.e., 35571468816 + 4382440000 = 188604^2 + 66200^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248559635 + ... + 1248559666.

Almost surely, 2^39953908816 is an apocalyptic number.

It is an amenable number.

39953908816 is a deficient number, since it is larger than the sum of its proper divisors (37456789546).

39953908816 is a wasteful number, since it uses less digits than its factorization.

39953908816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497119309 (or 2497119303 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 61.

The spelling of 39953908816 in words is "thirty-nine billion, nine hundred fifty-three million, nine hundred eight thousand, eight hundred sixteen".