6445871032383 has 12 divisors (see below), whose sum is σ = 9310739274928. Its totient is φ = 4297230429120.

The previous prime is 6445871032357. The next prime is 6445871032397. The reversal of 6445871032383 is 3832301785446.

It is a happy number.

6445871032383 is a `hidden beast` number, since 6 + 4 + 458 + 7 + 103 + 2 + 3 + 83 = 666.

It is a Cunningham number, because it is equal to 2538872²-1.

It is not a de Polignac number, because 6445871032383 - 2¹⁴ = 6445871015999 is a prime.

It is a super-3 number, since 3×6445871032383³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445871032483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1269438 + ... + 3808308.

Almost surely, 2^{6445871032383} is an apocalyptic number.

6445871032383 is a deficient number, since it is larger than the sum of its proper divisors (2864868242545).

6445871032383 is a wasteful number, since it uses less digits than its factorization.

6445871032383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820974 (or 2820971 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 6445871032383 in words is "six trillion, four hundred forty-five billion, eight hundred seventy-one million, thirty-two thousand, three hundred eighty-three".