864545281446 has 432 divisors, whose sum is σ = 2406529621440. Its totient is φ = 205875885600.

The previous prime is 864545281433. The next prime is 864545281469. The reversal of 864545281446 is 644182545468.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 27888557451 + ... + 27888557481.

It is an arithmetic number, because the mean of its divisors is an integer number (5570670420).

Almost surely, 2^864545281446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 864545281446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1203264810720).

864545281446 is an abundant number, since it is smaller than the sum of its proper divisors (1541984339994).

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

864545281446 is an equidigital number, since it uses as much as digits as its factorization.

864545281446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 73 counting only the distinct ones).

The product of its digits is 29491200, while the sum is 57.

The spelling of 864545281446 in words is "eight hundred sixty-four billion, five hundred forty-five million, two hundred eighty-one thousand, four hundred forty-six".