2144664480 has 192 divisors, whose sum is σ = 7754600448. Its totient is φ = 488064000.

The previous prime is 2144664437. The next prime is 2144664491. The reversal of 2144664480 is 844664412.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 842089 + ... + 844631.

It is an arithmetic number, because the mean of its divisors is an integer number (40388544).

Almost surely, 2^2144664480 is an apocalyptic number.

2144664480 is a gapful number since it is divisible by the number (20) 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 2144664480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3877300224).

2144664480 is an abundant number, since it is smaller than the sum of its proper divisors (5609935968).

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

2144664480 is a wasteful number, since it uses less digits than its factorization.

2144664480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819 (or 2811 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 39.

The square root of 2144664480 is about 46310.5223464387. The cubic root of 2144664480 is about 1289.5943439360.

The spelling of 2144664480 in words is "two billion, one hundred forty-four million, six hundred sixty-four thousand, four hundred eighty".