39638601172 has 6 divisors (see below), whose sum is σ = 69367552058. Its totient is φ = 19819300584.

The previous prime is 39638601169. The next prime is 39638601179. The reversal of 39638601172 is 27110683693.

It can be written as a sum of positive squares in only one way, i.e., 37599536836 + 2039064336 = 193906^2 + 45156^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39638601179) 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 as a sum of consecutive naturals, namely, 4954825143 + ... + 4954825150.

Almost surely, 2^39638601172 is an apocalyptic number.

It is an amenable number.

39638601172 is a deficient number, since it is larger than the sum of its proper divisors (29728950886).

39638601172 is a wasteful number, since it uses less digits than its factorization.

39638601172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9909650297 (or 9909650295 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 39638601172 in words is "thirty-nine billion, six hundred thirty-eight million, six hundred one thousand, one hundred seventy-two".