1305728901170 has 32 divisors (see below), whose sum is σ = 2512316580480. Its totient is φ = 487398271360.

The previous prime is 1305728901163. The next prime is 1305728901227. The reversal of 1305728901170 is 711098275031.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69223280 + ... + 69242139.

It is an arithmetic number, because the mean of its divisors is an integer number (78509893140).

Almost surely, 2^{1305728901170} is an apocalyptic number.

1305728901170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1305728901170 is a deficient number, since it is larger than the sum of its proper divisors (1206587679310).

1305728901170 is a wasteful number, since it uses less digits than its factorization.

1305728901170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138465490.

The product of its (nonzero) digits is 105840, while the sum is 44.

The spelling of 1305728901170 in words is "one trillion, three hundred five billion, seven hundred twenty-eight million, nine hundred one thousand, one hundred seventy".