39172428536 has 8 divisors (see below), whose sum is σ = 73448303520. Its totient is φ = 19586214264.

The previous prime is 39172428523. The next prime is 39172428539. The reversal of 39172428536 is 63582427193.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39172428539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2448276776 + ... + 2448276791.

It is an arithmetic number, because the mean of its divisors is an integer number (9181037940).

Almost surely, 2^39172428536 is an apocalyptic number.

It is an amenable number.

39172428536 is a deficient number, since it is larger than the sum of its proper divisors (34275874984).

39172428536 is a wasteful number, since it uses less digits than its factorization.

39172428536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4896553573 (or 4896553569 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

The spelling of 39172428536 in words is "thirty-nine billion, one hundred seventy-two million, four hundred twenty-eight thousand, five hundred thirty-six".