6466715238720 has 896 divisors, whose sum is σ = 23401537818624. Its totient is φ = 1499258880000.

The previous prime is 6466715238713. The next prime is 6466715238733. The reversal of 6466715238720 is 278325176646.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6486173262 + ... + 6486174258.

It is an arithmetic number, because the mean of its divisors is an integer number (26117787744).

Almost surely, 2^{6466715238720} is an apocalyptic number.

6466715238720 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 6466715238720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11700768909312).

6466715238720 is an abundant number, since it is smaller than the sum of its proper divisors (16934822579904).

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

6466715238720 is a wasteful number, since it uses less digits than its factorization.

6466715238720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351 (or 1341 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 57.

The spelling of 6466715238720 in words is "six trillion, four hundred sixty-six billion, seven hundred fifteen million, two hundred thirty-eight thousand, seven hundred twenty".