78082731738 has 96 divisors (see below), whose sum is σ = 192200366592. Its totient is φ = 22695321600.

The previous prime is 78082731703. The next prime is 78082731751. The reversal of 78082731738 is 83713728087.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 637306 + ... + 749882.

It is an arithmetic number, because the mean of its divisors is an integer number (2002087152).

Almost surely, 2^78082731738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78082731738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96100183296).

78082731738 is an abundant number, since it is smaller than the sum of its proper divisors (114117634854).

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

78082731738 is a wasteful number, since it uses less digits than its factorization.

78082731738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112740 (or 112737 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 78082731738 in words is "seventy-eight billion, eighty-two million, seven hundred thirty-one thousand, seven hundred thirty-eight".