1305630136452 has 48 divisors (see below), whose sum is σ = 3050050348800. Its totient is φ = 434698786080.

The previous prime is 1305630136429. The next prime is 1305630136471. The reversal of 1305630136452 is 2546310365031.

It is a self number, because there is not a number n which added to its sum of digits gives 1305630136452.

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, 123974427 + ... + 123984957.

It is an arithmetic number, because the mean of its divisors is an integer number (63542715600).

Almost surely, 2^{1305630136452} is an apocalyptic number.

1305630136452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1305630136452 is an abundant number, since it is smaller than the sum of its proper divisors (1744420212348).

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

1305630136452 is a wasteful number, since it uses less digits than its factorization.

1305630136452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21696 (or 21694 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 1305630136452 in words is "one trillion, three hundred five billion, six hundred thirty million, one hundred thirty-six thousand, four hundred fifty-two".