64181308050 has 72 divisors (see below), whose sum is σ = 172896522084. Its totient is φ = 17069086080.

The previous prime is 64181308049. The next prime is 64181308099. The reversal of 64181308050 is 5080318146.

64181308050 is a `hidden beast` number, since 641 + 8 + 1 + 3 + 0 + 8 + 0 + 5 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 37241666361 + 26939641689 = 192981^2 + 164133^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64181307996 and 64181308014.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23337 + ... + 359036.

Almost surely, 2^64181308050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64181308050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86448261042).

64181308050 is an abundant number, since it is smaller than the sum of its proper divisors (108715214034).

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

64181308050 is a wasteful number, since it uses less digits than its factorization.

64181308050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382764 (or 382756 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 64181308050 in words is "sixty-four billion, one hundred eighty-one million, three hundred eight thousand, fifty".