6489702769440 has 192 divisors, whose sum is σ = 22308619898880. Its totient is φ = 1572722211840.

The previous prime is 6489702769423. The next prime is 6489702769481. The reversal of 6489702769440 is 449672079846.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15308817 + ... + 15727023.

It is an arithmetic number, because the mean of its divisors is an integer number (116190728640).

Almost surely, 2^{6489702769440} is an apocalyptic number.

6489702769440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6489702769440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11154309949440).

6489702769440 is an abundant number, since it is smaller than the sum of its proper divisors (15818917129440).

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

6489702769440 is a wasteful number, since it uses less digits than its factorization.

6489702769440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421175 (or 421167 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 66.

The spelling of 6489702769440 in words is "six trillion, four hundred eighty-nine billion, seven hundred two million, seven hundred sixty-nine thousand, four hundred forty".