39659664998464 has 189 divisors, whose sum is σ = 92500171628319. Its totient is φ = 16822127750400.

The previous prime is 39659664998461. The next prime is 39659664998579. The reversal of 39659664998464 is 46489946695693.

The square root of 39659664998464 is 6297592.

It is a perfect power (a square), and thus also a powerful number.

It is not an unprimeable number, because it can be changed into a prime (39659664998461) 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 26 ways as a sum of consecutive naturals, for example, 37735170739 + ... + 37735171789.

Almost surely, 2^{39659664998464} is an apocalyptic number.

39659664998464 is the 6297592-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39659664998464

39659664998464 is an abundant number, since it is smaller than the sum of its proper divisors (52840506629855).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39659664998464 is an frugal number, since it uses more digits than its factorization.

39659664998464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342 (or 1167 counting only the distinct ones).

The product of its digits is 65303470080, while the sum is 88.

The spelling of 39659664998464 in words is "thirty-nine trillion, six hundred fifty-nine billion, six hundred sixty-four million, nine hundred ninety-eight thousand, four hundred sixty-four".