285942922650 has 432 divisors, whose sum is σ = 983058830208. Its totient is φ = 59410612800.

The previous prime is 285942922621. The next prime is 285942922651. The reversal of 285942922650 is 56229249582.

285942922650 is a `hidden beast` number, since 2 + 8 + 5 + 94 + 292 + 265 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285942922651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 29343679 + ... + 29353421.

It is an arithmetic number, because the mean of its divisors is an integer number (2275599144).

Almost surely, 2^285942922650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285942922650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491529415104).

285942922650 is an abundant number, since it is smaller than the sum of its proper divisors (697115907558).

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

285942922650 is a wasteful number, since it uses less digits than its factorization.

285942922650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9808 (or 9771 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 285942922650 in words is "two hundred eighty-five billion, nine hundred forty-two million, nine hundred twenty-two thousand, six hundred fifty".