485655152640 has 384 divisors, whose sum is σ = 1789758996480. Its totient is φ = 110126628864.

The previous prime is 485655152621. The next prime is 485655152641. The reversal of 485655152640 is 46251556584.

It is a tau number, because it is divible by the number of its divisors (384).

It is not an unprimeable number, because it can be changed into a prime (485655152641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27301189 + ... + 27318971.

It is an arithmetic number, because the mean of its divisors is an integer number (4660830720).

Almost surely, 2^485655152640 is an apocalyptic number.

485655152640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 485655152640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (894879498240).

485655152640 is an abundant number, since it is smaller than the sum of its proper divisors (1304103843840).

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

485655152640 is a wasteful number, since it uses less digits than its factorization.

485655152640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17947 (or 17927 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 51.

The spelling of 485655152640 in words is "four hundred eighty-five billion, six hundred fifty-five million, one hundred fifty-two thousand, six hundred forty".