39724234816 has 112 divisors (see below), whose sum is σ = 94782022272. Its totient is φ = 16160256000.

The previous prime is 39724234807. The next prime is 39724234841. The reversal of 39724234816 is 61843242793.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 39724234816.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650391 + ... + 708841.

It is an arithmetic number, because the mean of its divisors is an integer number (846268056).

Almost surely, 2^39724234816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39724234816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47391011136).

39724234816 is an abundant number, since it is smaller than the sum of its proper divisors (55057787456).

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

39724234816 is a wasteful number, since it uses less digits than its factorization.

39724234816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58548 (or 58538 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

The spelling of 39724234816 in words is "thirty-nine billion, seven hundred twenty-four million, two hundred thirty-four thousand, eight hundred sixteen".