1466631643568 has 120 divisors (see below), whose sum is σ = 3585792494592. Its totient is φ = 575970296832.

The previous prime is 1466631643567. The next prime is 1466631643571. The reversal of 1466631643568 is 8653461366641.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1466631643567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 871121 + ... + 1921487.

Almost surely, 2^{1466631643568} 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 1466631643568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1792896247296).

1466631643568 is an abundant number, since it is smaller than the sum of its proper divisors (2119160851024).

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

1466631643568 is a wasteful number, since it uses less digits than its factorization.

1466631643568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050539 (or 1050526 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 59.

The spelling of 1466631643568 in words is "one trillion, four hundred sixty-six billion, six hundred thirty-one million, six hundred forty-three thousand, five hundred sixty-eight".