78251082387104 has 96 divisors (see below), whose sum is σ = 169517638382400. Its totient is φ = 35554670511360.

The previous prime is 78251082387103. The next prime is 78251082387109. The reversal of 78251082387104 is 40178328015287.

78251082387104 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×78251082387104² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78251082387104.

It is not an unprimeable number, because it can be changed into a prime (78251082387103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108206627 + ... + 108927389.

It is an arithmetic number, because the mean of its divisors is an integer number (1765808733150).

Almost surely, 2^{78251082387104} 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 78251082387104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84758819191200).

78251082387104 is an abundant number, since it is smaller than the sum of its proper divisors (91266555995296).

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

78251082387104 is a wasteful number, since it uses less digits than its factorization.

78251082387104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723355 (or 723325 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 56.

The spelling of 78251082387104 in words is "seventy-eight trillion, two hundred fifty-one billion, eighty-two million, three hundred eighty-seven thousand, one hundred four".