1305604666040 has 16 divisors (see below), whose sum is σ = 2937610498680. Its totient is φ = 522241866400.

The previous prime is 1305604666013. The next prime is 1305604666087. The reversal of 1305604666040 is 406664065031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16320058286 + ... + 16320058365.

Almost surely, 2^{1305604666040} is an apocalyptic number.

1305604666040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1305604666040 is an abundant number, since it is smaller than the sum of its proper divisors (1632005832640).

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

1305604666040 is a wasteful number, since it uses less digits than its factorization.

1305604666040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32640116662 (or 32640116658 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 1305604666040 in words is "one trillion, three hundred five billion, six hundred four million, six hundred sixty-six thousand, forty".