427380215850 has 288 divisors, whose sum is σ = 1339434270720. Its totient is φ = 95683835520.

The previous prime is 427380215777. The next prime is 427380215861. The reversal of 427380215850 is 58512083724.

427380215850 is a `hidden beast` number, since 4 + 2 + 7 + 380 + 215 + 8 + 50 = 666.

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 = 427380215796 and 427380215805.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 31597189 + ... + 31610711.

It is an arithmetic number, because the mean of its divisors is an integer number (4650813440).

Almost surely, 2^427380215850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427380215850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669717135360).

427380215850 is an abundant number, since it is smaller than the sum of its proper divisors (912054054870).

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

427380215850 is a wasteful number, since it uses less digits than its factorization.

427380215850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13754 (or 13746 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 427380215850 in words is "four hundred twenty-seven billion, three hundred eighty million, two hundred fifteen thousand, eight hundred fifty".