1305640868334 has 16 divisors (see below), whose sum is σ = 2848670985600. Its totient is φ = 395648747960.

The previous prime is 1305640868309. The next prime is 1305640868453. The reversal of 1305640868334 is 4338680465031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9891218634 + ... + 9891218765.

It is an arithmetic number, because the mean of its divisors is an integer number (178041936600).

Almost surely, 2^{1305640868334} is an apocalyptic number.

1305640868334 is an abundant number, since it is smaller than the sum of its proper divisors (1543030117266).

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

1305640868334 is a wasteful number, since it uses less digits than its factorization.

1305640868334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19782437415.

The product of its (nonzero) digits is 4976640, while the sum is 51.

The spelling of 1305640868334 in words is "one trillion, three hundred five billion, six hundred forty million, eight hundred sixty-eight thousand, three hundred thirty-four".