8179780050 has 144 divisors (see below), whose sum is σ = 23715831048. Its totient is φ = 2009318400.

The previous prime is 8179780009. The next prime is 8179780067. The reversal of 8179780050 is 500879718.

It can be written as a sum of positive squares in 12 ways, for example, as 530703369 + 7649076681 = 23037^2 + 87459^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 8179779978 and 8179780005.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3584910 + ... + 3587190.

Almost surely, 2^8179780050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8179780050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11857915524).

8179780050 is an abundant number, since it is smaller than the sum of its proper divisors (15536050998).

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

8179780050 is a wasteful number, since it uses less digits than its factorization.

8179780050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925 (or 2917 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The square root of 8179780050 is about 90442.1364741015. The cubic root of 8179780050 is about 2014.8708260532.

The spelling of 8179780050 in words is "eight billion, one hundred seventy-nine million, seven hundred eighty thousand, fifty".