39996188656516 has 27 divisors (see below), whose sum is σ = 70994630570437. Its totient is φ = 19715988330080.

The previous prime is 39996188656499. The next prime is 39996188656517. The reversal of 39996188656516 is 61565688169993.

The square root of 39996188656516 is 6324254.

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

It can be written as a sum of positive squares in only one way, i.e., 39938734484100 + 57454172416 = 6319710^2 + 239696^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39996188656516.

It is not an unprimeable number, because it can be changed into a prime (39996188656517) 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 8 ways as a sum of consecutive naturals, for example, 898021800 + ... + 898066336.

Almost surely, 2^{39996188656516} is an apocalyptic number.

39996188656516 is the 6324254-th square number.

It is an amenable number.

39996188656516 is a deficient number, since it is larger than the sum of its proper divisors (30998441913921).

39996188656516 is an frugal number, since it uses more digits than its factorization.

39996188656516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89220 (or 44610 counting only the distinct ones).

The product of its digits is 4534963200, while the sum is 82.

The spelling of 39996188656516 in words is "thirty-nine trillion, nine hundred ninety-six billion, one hundred eighty-eight million, six hundred fifty-six thousand, five hundred sixteen".