16244025344640 has 256 divisors, whose sum is σ = 57663815529600. Its totient is φ = 4321734082560.

The previous prime is 16244025344627. The next prime is 16244025344663. The reversal of 16244025344640 is 4644352044261.

16244025344640 is a `hidden beast` number, since 1 + 6 + 244 + 0 + 2 + 5 + 344 + 64 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 6396735 + ... + 8567745.

Almost surely, 2^{16244025344640} is an apocalyptic number.

16244025344640 is a gapful number since it is divisible by the number (10) 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 16244025344640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28831907764800).

16244025344640 is an abundant number, since it is smaller than the sum of its proper divisors (41419790184960).

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

16244025344640 is a wasteful number, since it uses less digits than its factorization.

16244025344640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171472 (or 2171454 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 45.

The spelling of 16244025344640 in words is "sixteen trillion, two hundred forty-four billion, twenty-five million, three hundred forty-four thousand, six hundred forty".