39280638496 has 72 divisors (see below), whose sum is σ = 85190700672. Its totient is φ = 17815459200.

The previous prime is 39280638491. The next prime is 39280638499. The reversal of 39280638496 is 69483608293.

It is a self number, because there is not a number n which added to its sum of digits gives 39280638496.

It is not an unprimeable number, because it can be changed into a prime (39280638491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1781781 + ... + 1803691.

It is an arithmetic number, because the mean of its divisors is an integer number (1183204176).

Almost surely, 2^39280638496 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 39280638496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42595350336).

39280638496 is an abundant number, since it is smaller than the sum of its proper divisors (45910062176).

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

39280638496 is a wasteful number, since it uses less digits than its factorization.

39280638496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22406 (or 22387 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 58.

It can be divided in two parts, 39280 and 638496, that added together give a palindrome (677776).

The spelling of 39280638496 in words is "thirty-nine billion, two hundred eighty million, six hundred thirty-eight thousand, four hundred ninety-six".