78138330830736 has 160 divisors (see below), whose sum is σ = 233208738828288. Its totient is φ = 22280920811520.

The previous prime is 78138330830723. The next prime is 78138330830737. The reversal of 78138330830736 is 63703803383187.

It is a super-3 number, since 3×78138330830736³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78138330830736.

It is not an unprimeable number, because it can be changed into a prime (78138330830737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43487805 + ... + 45248931.

Almost surely, 2^{78138330830736} 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 78138330830736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116604369414144).

78138330830736 is an abundant number, since it is smaller than the sum of its proper divisors (155070407997552).

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

78138330830736 is a wasteful number, since it uses less digits than its factorization.

78138330830736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766109 (or 1766103 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 60.

The spelling of 78138330830736 in words is "seventy-eight trillion, one hundred thirty-eight billion, three hundred thirty million, eight hundred thirty thousand, seven hundred thirty-six".