6489138834880 has 224 divisors, whose sum is σ = 16743663256320. Its totient is φ = 2381220495360.

The previous prime is 6489138834847. The next prime is 6489138834931. The reversal of 6489138834880 is 884388319846.

It is a super-4 number, since 4×6489138834880⁴ (a number of 52 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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 31 ways as a sum of consecutive naturals, for example, 851477470 + ... + 851485090.

It is an arithmetic number, because the mean of its divisors is an integer number (74748496680).

Almost surely, 2^{6489138834880} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6489138834880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8371831628160).

6489138834880 is an abundant number, since it is smaller than the sum of its proper divisors (10254524421440).

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

6489138834880 is a wasteful number, since it uses less digits than its factorization.

6489138834880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8887 (or 8877 counting only the distinct ones).

The product of its (nonzero) digits is 254803968, while the sum is 70.

The spelling of 6489138834880 in words is "six trillion, four hundred eighty-nine billion, one hundred thirty-eight million, eight hundred thirty-four thousand, eight hundred eighty".