1205718668560 has 60 divisors (see below), whose sum is σ = 3260976878988. Its totient is φ = 413389256448.

The previous prime is 1205718668513. The next prime is 1205718668563. The reversal of 1205718668560 is 658668175021.

It can be written as a sum of positive squares in 2 ways, for example, as 397323472896 + 808395195664 = 630336^2 + 899108^2 .

It is not an unprimeable number, because it can be changed into a prime (1205718668563) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 153786727 + ... + 153794566.

Almost surely, 2^{1205718668560} is an apocalyptic number.

1205718668560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205718668560 is an abundant number, since it is smaller than the sum of its proper divisors (2055258210428).

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

1205718668560 is a wasteful number, since it uses less digits than its factorization.

1205718668560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307581320 (or 307581307 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 1205718668560 in words is "one trillion, two hundred five billion, seven hundred eighteen million, six hundred sixty-eight thousand, five hundred sixty".