1306521345660 has 48 divisors (see below), whose sum is σ = 3776268152832. Its totient is φ = 337166798400.

The previous prime is 1306521345587. The next prime is 1306521345673. The reversal of 1306521345660 is 665431256031.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 351213556 + ... + 351217275.

It is an arithmetic number, because the mean of its divisors is an integer number (78672253184).

Almost surely, 2^{1306521345660} is an apocalyptic number.

1306521345660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1306521345660 is an abundant number, since it is smaller than the sum of its proper divisors (2469746807172).

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

1306521345660 is a wasteful number, since it uses less digits than its factorization.

1306521345660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702430874 (or 702430872 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 1306521345660 in words is "one trillion, three hundred six billion, five hundred twenty-one million, three hundred forty-five thousand, six hundred sixty".