78850386209504 has 864 divisors, whose sum is σ = 208694018211840. Its totient is φ = 29060218865664.

The previous prime is 78850386209473. The next prime is 78850386209513. The reversal of 78850386209504 is 40590268305887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 129901789169 + ... + 129901789775.

It is an arithmetic number, because the mean of its divisors is an integer number (241544002560).

Almost surely, 2^{78850386209504} 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 78850386209504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104347009105920).

78850386209504 is an abundant number, since it is smaller than the sum of its proper divisors (129843632002336).

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

78850386209504 is a wasteful number, since it uses less digits than its factorization.

78850386209504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 65.

The spelling of 78850386209504 in words is "seventy-eight trillion, eight hundred fifty billion, three hundred eighty-six million, two hundred nine thousand, five hundred four".