1305603126660 has 192 divisors, whose sum is σ = 4250199195648. Its totient is φ = 293305453056.

The previous prime is 1305603126629. The next prime is 1305603126689. The reversal of 1305603126660 is 666213065031.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5593002 + ... + 5821758.

It is an arithmetic number, because the mean of its divisors is an integer number (22136454144).

Almost surely, 2^{1305603126660} is an apocalyptic number.

1305603126660 is a gapful number since it is divisible by the number (10) 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 1305603126660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2125099597824).

1305603126660 is an abundant number, since it is smaller than the sum of its proper divisors (2944596068988).

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

1305603126660 is a wasteful number, since it uses less digits than its factorization.

1305603126660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229010 (or 229008 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 39.

The spelling of 1305603126660 in words is "one trillion, three hundred five billion, six hundred three million, one hundred twenty-six thousand, six hundred sixty".