39390607321728 has 128 divisors (see below), whose sum is σ = 112682457780480. Its totient is φ = 12119907692544.

The previous prime is 39390607321693. The next prime is 39390607321837. The reversal of 39390607321728 is 82712370609393.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 357836425 + ... + 357946487.

It is an arithmetic number, because the mean of its divisors is an integer number (880331701410).

Almost surely, 2^{39390607321728} is an apocalyptic number.

It is an amenable number.

39390607321728 is an abundant number, since it is smaller than the sum of its proper divisors (73291850458752).

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

39390607321728 is a wasteful number, since it uses less digits than its factorization.

39390607321728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181786 (or 181774 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 60.

The spelling of 39390607321728 in words is "thirty-nine trillion, three hundred ninety billion, six hundred seven million, three hundred twenty-one thousand, seven hundred twenty-eight".