464988665440 has 96 divisors (see below), whose sum is σ = 1185311939616. Its totient is φ = 171358187520.

The previous prime is 464988665411. The next prime is 464988665441. The reversal of 464988665440 is 44566889464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464988665441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 869139 + ... + 1298221.

It is an arithmetic number, because the mean of its divisors is an integer number (12346999371).

Almost surely, 2^464988665440 is an apocalyptic number.

464988665440 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 464988665440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (592655969808).

464988665440 is an abundant number, since it is smaller than the sum of its proper divisors (720323274176).

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

464988665440 is a wasteful number, since it uses less digits than its factorization.

464988665440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429632 (or 429624 counting only the distinct ones).

The product of its (nonzero) digits is 159252480, while the sum is 64.

The spelling of 464988665440 in words is "four hundred sixty-four billion, nine hundred eighty-eight million, six hundred sixty-five thousand, four hundred forty".