1206565603456 has 128 divisors (see below), whose sum is σ = 2511564278400. Its totient is φ = 576642662400.

The previous prime is 1206565603433. The next prime is 1206565603483. The reversal of 1206565603456 is 6543065656021.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 658964461 + ... + 658966291.

It is an arithmetic number, because the mean of its divisors is an integer number (19621595925).

Almost surely, 2^{1206565603456} is an apocalyptic number.

1206565603456 is a gapful number since it is divisible by the number (16) 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 1206565603456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1255782139200).

1206565603456 is an abundant number, since it is smaller than the sum of its proper divisors (1304998674944).

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

1206565603456 is a wasteful number, since it uses less digits than its factorization.

1206565603456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3558 (or 3546 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 1206565603456 in words is "one trillion, two hundred six billion, five hundred sixty-five million, six hundred three thousand, four hundred fifty-six".