39836444545 has 16 divisors (see below), whose sum is σ = 48109800960. Its totient is φ = 31665687424.

The previous prime is 39836444503. The next prime is 39836444561. The reversal of 39836444545 is 54544463893.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39836444545 is a prime.

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, 522342 + ... + 593728.

It is an arithmetic number, because the mean of its divisors is an integer number (3006862560).

Almost surely, 2^39836444545 is an apocalyptic number.

It is an amenable number.

39836444545 is a deficient number, since it is larger than the sum of its proper divisors (8273356415).

39836444545 is a wasteful number, since it uses less digits than its factorization.

39836444545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72104.

The product of its digits is 24883200, while the sum is 55.

The spelling of 39836444545 in words is "thirty-nine billion, eight hundred thirty-six million, four hundred forty-four thousand, five hundred forty-five".