78596259840 has 720 divisors, whose sum is σ = 316595278272. Its totient is φ = 17666408448.

The previous prime is 78596259839. The next prime is 78596259869. The reversal of 78596259840 is 4895269587.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent 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, 500613042 + ... + 500613198.

Almost surely, 2^78596259840 is an apocalyptic number.

78596259840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78596259840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158297639136).

78596259840 is an abundant number, since it is smaller than the sum of its proper divisors (237999018432).

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

78596259840 is a wasteful number, since it uses less digits than its factorization.

78596259840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 63.

The spelling of 78596259840 in words is "seventy-eight billion, five hundred ninety-six million, two hundred fifty-nine thousand, eight hundred forty".