464498618640 has 640 divisors, whose sum is σ = 1731630597120. Its totient is φ = 100788240384.

The previous prime is 464498618627. The next prime is 464498618657. The reversal of 464498618640 is 46816894464.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 912570706 + ... + 912571214.

It is an arithmetic number, because the mean of its divisors is an integer number (2705672808).

Almost surely, 2^464498618640 is an apocalyptic number.

464498618640 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 464498618640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (865815298560).

464498618640 is an abundant number, since it is smaller than the sum of its proper divisors (1267131978480).

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

464498618640 is a wasteful number, since it uses less digits than its factorization.

464498618640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899 (or 893 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 60.

The spelling of 464498618640 in words is "four hundred sixty-four billion, four hundred ninety-eight million, six hundred eighteen thousand, six hundred forty".