464980985856 has 144 divisors (see below), whose sum is σ = 1359954086400. Its totient is φ = 153031237632.

The previous prime is 464980985831. The next prime is 464980985879. The reversal of 464980985856 is 658589089464.

464980985856 is a `hidden beast` number, since 4 + 6 + 498 + 0 + 9 + 85 + 8 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1296465 + ... + 1615791.

It is an arithmetic number, because the mean of its divisors is an integer number (9444125600).

Almost surely, 2^464980985856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 464980985856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679977043200).

464980985856 is an abundant number, since it is smaller than the sum of its proper divisors (894973100544).

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

464980985856 is a wasteful number, since it uses less digits than its factorization.

464980985856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319434 (or 319411 counting only the distinct ones).

The product of its (nonzero) digits is 597196800, while the sum is 72.

The spelling of 464980985856 in words is "four hundred sixty-four billion, nine hundred eighty million, nine hundred eighty-five thousand, eight hundred fifty-six".