78560099856 has 240 divisors, whose sum is σ = 265896176000. Its totient is φ = 22445361792.

The previous prime is 78560099851. The next prime is 78560099861. The reversal of 78560099856 is 65899006587.

It is an interprime number because it is at equal distance from previous prime (78560099851) and next prime (78560099861).

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

It is a junction number, because it is equal to n+sod(n) for n = 78560099793 and 78560099802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78560099851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1304130 + ... + 1363038.

Almost surely, 2^78560099856 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 78560099856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132948088000).

78560099856 is an abundant number, since it is smaller than the sum of its proper divisors (187336076144).

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

78560099856 is an equidigital number, since it uses as much as digits as its factorization.

78560099856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58953 (or 58921 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 63.

The spelling of 78560099856 in words is "seventy-eight billion, five hundred sixty million, ninety-nine thousand, eight hundred fifty-six".