39816520704 has 220 divisors, whose sum is σ = 119398013724. Its totient is φ = 13216628736.

The previous prime is 39816520687. The next prime is 39816520747. The reversal of 39816520704 is 40702561893.

It can be written as a sum of positive squares in 2 ways, for example, as 11914159104 + 27902361600 = 109152^2 + 167040^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 39816520704.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22974622 + ... + 22976354.

It is a 1-persistent number, because it is pandigital, but 2⋅39816520704 = 79633041408 is not.

Almost surely, 2^39816520704 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 39816520704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59699006862).

39816520704 is an abundant number, since it is smaller than the sum of its proper divisors (79581493020).

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

39816520704 is a wasteful number, since it uses less digits than its factorization.

39816520704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042 (or 2015 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 39816520704 in words is "thirty-nine billion, eight hundred sixteen million, five hundred twenty thousand, seven hundred four".