40639265716 has 48 divisors (see below), whose sum is σ = 83472076800. Its totient is φ = 16950928608.

The previous prime is 40639265701. The next prime is 40639265753. The reversal of 40639265716 is 61756293604.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40639265716.

It is a congruent number.

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, 149305 + ... + 321823.

It is an arithmetic number, because the mean of its divisors is an integer number (1739001600).

Almost surely, 2^40639265716 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 40639265716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41736038400).

40639265716 is an abundant number, since it is smaller than the sum of its proper divisors (42832811084).

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

40639265716 is a wasteful number, since it uses less digits than its factorization.

40639265716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172756 (or 172754 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 40639265716 in words is "forty billion, six hundred thirty-nine million, two hundred sixty-five thousand, seven hundred sixteen".