6431984204290 has 8 divisors (see below), whose sum is σ = 11577571567740. Its totient is φ = 2572793681712.

The previous prime is 6431984204209. The next prime is 6431984204293. The reversal of 6431984204290 is 924024891346.

It can be written as a sum of positive squares in 2 ways, for example, as 6305367080401 + 126617123889 = 2511049^2 + 355833^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6431984204293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321599210205 + ... + 321599210224.

Almost surely, 2^{6431984204290} is an apocalyptic number.

6431984204290 is a deficient number, since it is larger than the sum of its proper divisors (5145587363450).

6431984204290 is a wasteful number, since it uses less digits than its factorization.

6431984204290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643198420436.

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 6431984204290 in words is "six trillion, four hundred thirty-one billion, nine hundred eighty-four million, two hundred four thousand, two hundred ninety".