78486944718 has 192 divisors, whose sum is σ = 201443493888. Its totient is φ = 20197900800.

The previous prime is 78486944699. The next prime is 78486944729. The reversal of 78486944718 is 81744968487.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 107959671 + ... + 107960397.

It is an arithmetic number, because the mean of its divisors is an integer number (1049184864).

Almost surely, 2^78486944718 is an apocalyptic number.

78486944718 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 78486944718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100721746944).

78486944718 is an abundant number, since it is smaller than the sum of its proper divisors (122956549170).

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

78486944718 is a wasteful number, since it uses less digits than its factorization.

78486944718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407 (or 1400 counting only the distinct ones).

The product of its digits is 86704128, while the sum is 66.

The spelling of 78486944718 in words is "seventy-eight billion, four hundred eighty-six million, nine hundred forty-four thousand, seven hundred eighteen".