78506652236850 has 288 divisors, whose sum is σ = 228335195612160. Its totient is φ = 20016817381440.

The previous prime is 78506652236849. The next prime is 78506652236851. The reversal of 78506652236850 is 5863225660587.

78506652236850 is a `hidden beast` number, since 7 + 8 + 50 + 6 + 6 + 522 + 3 + 6 + 8 + 50 = 666.

It is an interprime number because it is at equal distance from previous prime (78506652236849) and next prime (78506652236851).

It is not an unprimeable number, because it can be changed into a prime (78506652236851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 709468227 + ... + 709578873.

It is an arithmetic number, because the mean of its divisors is an integer number (792830540320).

Almost surely, 2^{78506652236850} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78506652236850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114167597806080).

78506652236850 is an abundant number, since it is smaller than the sum of its proper divisors (149828543375310).

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

78506652236850 is a wasteful number, since it uses less digits than its factorization.

78506652236850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113236 (or 113219 counting only the distinct ones).

The product of its (nonzero) digits is 145152000, while the sum is 63.

The spelling of 78506652236850 in words is "seventy-eight trillion, five hundred six billion, six hundred fifty-two million, two hundred thirty-six thousand, eight hundred fifty".