6445989741830 has 16 divisors (see below), whose sum is σ = 11742574085424. Its totient is φ = 2547330885600.

The previous prime is 6445989741809. The next prime is 6445989741859. The reversal of 6445989741830 is 381479895446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3883125521 + ... + 3883127180.

It is an arithmetic number, because the mean of its divisors is an integer number (733910880339).

Almost surely, 2^{6445989741830} is an apocalyptic number.

6445989741830 is a deficient number, since it is larger than the sum of its proper divisors (5296584343594).

6445989741830 is a wasteful number, since it uses less digits than its factorization.

6445989741830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7766252791.

The product of its (nonzero) digits is 209018880, while the sum is 68.

The spelling of 6445989741830 in words is "six trillion, four hundred forty-five billion, nine hundred eighty-nine million, seven hundred forty-one thousand, eight hundred thirty".