1643130024640 has 56 divisors (see below), whose sum is σ = 4213680564240. Its totient is φ = 606694161408.

The previous prime is 1643130024629. The next prime is 1643130024643. The reversal of 1643130024640 is 464200313461.

It is a junction number, because it is equal to n+sod(n) for n = 1643130024596 and 1643130024605.

It is not an unprimeable number, because it can be changed into a prime (1643130024643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197487430 + ... + 197495749.

It is an arithmetic number, because the mean of its divisors is an integer number (75244295790).

Almost surely, 2^{1643130024640} is an apocalyptic number.

1643130024640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1643130024640 is an abundant number, since it is smaller than the sum of its proper divisors (2570550539600).

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

1643130024640 is a wasteful number, since it uses less digits than its factorization.

1643130024640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394983209 (or 394983199 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 1643130024640 in words is "one trillion, six hundred forty-three billion, one hundred thirty million, twenty-four thousand, six hundred forty".