39578500066 has 32 divisors (see below), whose sum is σ = 68264403840. Its totient is φ = 16858647936.

The previous prime is 39578500063. The next prime is 39578500097. The reversal of 39578500066 is 66000587593.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 39578499992 and 39578500019.

It is not an unprimeable number, because it can be changed into a prime (39578500063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1507540 + ... + 1533568.

It is an arithmetic number, because the mean of its divisors is an integer number (2133262620).

Almost surely, 2^39578500066 is an apocalyptic number.

39578500066 is a deficient number, since it is larger than the sum of its proper divisors (28685903774).

39578500066 is a wasteful number, since it uses less digits than its factorization.

39578500066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26698.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 39578500066 in words is "thirty-nine billion, five hundred seventy-eight million, five hundred thousand, sixty-six".